First, you've got a high IQ

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Obviously, this is the most obvious one of all the signs to come: a high IQ is a sign of genius level intelligence. A high IQ has been correlated to some of the most intelligent people in history. Einstein had a IQ of 160, Anushka Dixit got 162, Elon Musk scored 165 and Isaac Newton managed a 190!
You don't fit inside a box

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Not being able to stick to confines or fit in a "so-called" box is probably one of the most prevalent signs of being a genius. These sorts of people think abstractly and creatively to approach solutions to problems, and you might even manage to confuse others with your wacky resolutions!
You have an intense inner monologue

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A genius will have a constant inner monologue, which can range between artistic, mathematical, verbal and visual. They can be inspiring and helpful voices, but can also be dark, more serious voices, like the ones that plagued Vincent Van Gogh in his time.
You have a strong sense of self

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Geniuses are usually pretty good at knowing themselves inside and out. This can be traits, values, goals, desires etc. Someone with a strong sense of self will usually be considered to be intelligent because it means that they are secure, know what their skills are and are confident.
You also talk to yourself

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Talking to yourself is one of the major signs of being a genius and you've probably heard it before. One of the most signifcant benefits of being able to talk to yourself is improving your memory, which is obviously important to a genius. Also, it can help retain more information and provide clarity.
You're a great active listener

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A genius has a great knack for active listening skills. They're able to have a deep and meaningful conversation with others around them while being able to listen and make the other person feel listened to. Usually, it's because of how self-aware they actually are.
You over analyze everything

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Of course, geniuses are just great at over-analyzing everything, even when they don't need to. They can start to question fundamental, existential questions like: "Why are we here?" Geniuses take these kind of theories quite seriously and will always look for answer.
You're eager to learn more and more

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Maybe you're never happy with a straightforward explanation. You probe for the truth by asking loads of questions, digging into the depths of the internet to learn about a topic of interest. Researchers examined data on 5,672 people to determine what factors might influence openness. Children with higher IQs at 11 years old were also more likely to be open to new experiences 50 years later.
You believe in yourself and your intelligence

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Geniuses have an apt for knowing how intelligent they actually are. There's plenty of intelligent people in the world that will never be able to become geniuses because they are riddled with self-doubt. What sets apart the geniuses is confidence and determination.
Your memory is impeccable

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You get a lot of props for how perceptive you are, right? Even if you're no Sherlock Holmes, showing an interest in the world around you is indicative of a sharp mind. Memory is your brain's capacity to temporarily store and manipulate discrete chunks of data. A study from 2010 found a significant correlation between that and genius-level intelligence.
You're at your most productive at night

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Those who stay up later at night tend to be more intelligent than early-risers apparently. The reason for this is that when someone wakes up early, they can exert all their energy and end up not having much energy left for the rest of the day. However, the clever ones just work through the night.
You'd describe yourself as an abstract thinker

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Genius characteristics include a more dynamic approach to problem solving and conceptualization. This means that they will take nothing at face value, including information and facts. They will prefer to challenge and disprove already cemented theories.
You're not afraid to take a calculated risk

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True innovators will always want to test limits. If they believe they are on the verge of a breakthrough, they will not be content taking the easy way out. This way of living often requires people to put themselves in harm's way, either physically or professionally, yet it often results in groundbreaking contributions.
You spend a lot of your time alone

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Solitude is like a genius' best friend. Aloneness and lonliness are two different concepts; lonliness is that lack of connection to others, aloneness is being mentally different from others. One of the biggest differences is that people will seek aloneness, but not lonliness.
You reject the idea of a routine

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A genius' typical traits suggest that they can have trouble settling into a routine, perhaps because they are always thinking of new things to investigate. It's not uncommon for those who go on to do great things to be the type of people who work best in the early hours of the morning, when everyone else has gone to bed.
You're always striving for innovation

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Geniuses are always looking for the next thing to invent or create and will find it hard to be able to sit still. Despite any massive achievements, geniuses won't take that as a sign to stop and will continue to strive towards success with more wacky and crazy ideas.
You despise mediocrity

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Mediocrity is the antagonist to the average genius. It goes against everything they believe in; curiosity, dedication, innovation. When they're surrounded by people who are unambitious and unbothered, geniuses will dislike these sorts of people very quickly.
You've got strong self-control

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Geniuses tend to exhibit higher levels of self-control. According to a Yale study in 2009, participants were asked to complete an IQ test for a reward. They were then told that if they wanted to wait for the reward, they would get a higher premium. Obviously, those with higher IQs waited for the reward.
You're not afraid to admit when you're clueless

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One of the best traits of a genius is that they will admit when they don't know everything. While some might just think they're being humble, or self-depreciating, they're actually just self-aware enough to know when they must admit to defeat to learn more.
You're empathetic towards others

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One of the most important aspects of emotional intelligence is empathy. The capacity for self-awareness and positive emotional expression is what we mean when we talk about emotional intelligence. The first stage in developing emotional intelligence is self-awareness; nevertheless, those with a high IQ also have a strong capacity for empathy.
You are always looking to keep the peace

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Good social skills are another sign of genius-level intelligence and that includes solving conflicts. Perhaps you can mediate conflicts between your grumpy coworkers or your bickering friends. You've always been able to make peace among fighting siblings or cheer up your stressed out parents, even when you were a little kid.
You're great at adapting

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Geniuses are self-aware enough to know that they need to be flexible and adaptable to life and all of its chaos. This means that when something gets thrown their way, they're able to approach the situation at hand well, whether it be a failed experiment or just moving home!
You worry quite a lot

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A Doctor of Psychology surveyed a random sample of college freshmen. According to the results, the worried pupils outperformed the others. Problem-solving is constantly on a genius' mind. They worry a lot because they are always contemplating something of course!
You manage your emotions very well

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At some point or another, everyone experiences unpleasant or painful feelings. Yet, your level of emotional intelligence can be gauged by how you deal with these feelings. This means understanding nuanced feelings, responding effectively, and expressing them healthily.
You're curious about everything around you

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Curiosity about the world and everything in it should never be diminished. People with genius-level intelligence will always be looking to touch up their knowledge on a number of subjects that might not even have anything to do with their field of study or profession.
You're skeptical about spiritual people

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Geniuses are grounded in science; that's what they believe in. They can find it difficult to be around or socialize with people who are more spiritual believers. They're not gullible people so don't try to sell them any of your healing stones any time soon.
Oddly, you bite your nails all the time

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Biting nails is another common factor among geniuses too. Apparently, when someone is deep in thought, they are more likely to start unconsciously biting their nails. Obviously, geniuses can be lost in thought for pretty much most of the day, meaning that they bite their nails all too often.
You can sometimes be awkward and shy

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While not every genius will be a shy or awkward person, and vice versa, there's actually a proven link between being introverted and being gifted. Around 60% of intelligent children are introverts and more than 75% of people with a higher IQ than 160 are equally shy.
You pick up on body language easily

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People with genius-level intelligence are so hyper aware of their surroundings and environments that they are able to pick up on small shifts and changes, and this includes that of people's body language. It makes them better at communicating with others.
You have a little pet companion

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Many people report improved psychological well-being and intelligence after getting a pet. Pet owners are more likely to feel less isolated, manage stress better and have fewer depressive episodes. Venting to a pet that will always listen is similar to talking to oneself in that it can help you work through difficult emotions and boost your mood.
You grew up in an intelligent family
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It's not always dependant on genes that you'll be a gene...ius, but it can definitely help. If you grew up in a family with a long line of super duper brain power, this makes it more likely you'll be intelligent. Not only that, but growing up in a household constantly surrounded by good brain sense is likely to rub off on you!
You surround yourself with clever people, too

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Like calls to like, as they say, and it's likely you'll be surrounded by intelligent friends and colleagues if you're a clever person yourself. This is because to thrive, you need to be able to discuss intelligent topics and not feel like you're being stifled with more 'simple' topics or ways of thinking.
You question the status quo
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It can be very difficult for a genius to sit back and relax with the status quo. Not only that, you'll be fighting for change! You might feel very restricted if you're told to have a 'normal' job with 'normal' working hours and you constantly challenge the accepted way things are.
You most likely work for yourself
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With this in mind, it's actually really like for an intelligent person to want to work for themselves and be their own boss. You might even be an entrepreneur starting a business. This is because it gives you freedom to work how you want, when you want - and for your intelligent brain, that's a plus.
You follow through on your promises
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People with high intelligence likely follow through on their promises and put plans into action - because they're driven, and because they don't use words lightly. But it's also because they're clever enough to know that relationships will prosper only when you earn people's trust.
You're confident in who you are, and what you do
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Your high intelligence gives you that confidence in who you are, how you like to work and your own decisions. It could be said that people with high intelligence have more self doubt because they overthink/worry more, but most of the time, you'll have a greater ability to understand yourself better.
You can be a procrastinator
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Being very intelligent doesn't always mean you're productive! The downside of having such a big brain is that there are more distractions that can fit in there. Procrastination can actually be a sign of higher intelligence because you're constantly thinking and being creative in your mind that you might be jumping from one project to the next.
You're very passionate and creative
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Which leads us onto this! You're likely a very passionate and creative person, too. More intelligent people might fill their time with creative hobbies, as well as using their creative passion to apply to goals and things like business models or ideas if they're looking to be an entrepreneur.
You wouldn't get by without to-do lists
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Because procrastination comes so easy to you, and because your brain is working overtime, it can mean that you depend (maybe a little too much) on to-do lists! Without these, you would lose track of the many, many things your big brain is telling you to do throughout the day.
You keep a journal
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It's very likely for people with higher intelligence to keep journals, and this can be because of the overwhelming amount of thoughts in their mind. It can also because your mind is constantly churning out new ideas (for hobbies and for work) so you need a place to write them down and explore them.
And a pocket notebook on you at all times!
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You know that annoying moment you get one of the best ideas you've had in the shower? You need to have a notebook on hand, wherever you go, to make sure you can write good stuff down and not forget it. We're not saying take your notebook into the shower with you, though...
You might actually get the answer to simple puzzles wrong
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Funnily enough, the more intelligent you are, the more likely it could be that you can the answer to very simple puzzles or questions wrong. This is because your larger capacity of thinking will often expect the answer to be a complicated one and you may overthink the puzzle, when actually the answer is simple - too simple for your brain!
You depend on reminder alarms
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Just like you depend on to-do lists to get through the day, you likely also depend on reminder alarms you set for things you need to do within a time limit. You probably set them for even the smallest things like 'brush your teeth' because you're so busy thinking, planning and get-up-and-go-ing that you forget the simplest things!
You know when to give up

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This may sound really pessimistic, but it's all about avoiding flogging a dead horse and all that. You know your time is precious, so you aren't going to waste it doing the same thing over and over again if it's not working. You know when to hold your hands up and think of a plan B - or to abandon a situation altogether!
But you also don't take no for an answer
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In comparison, for those situations where you really believe something will work and you know you just have to keep fighting, you definitely won't give up. Not only will you not take no for an answer in the right circumstances, but you'll think new and improved ways of convincing someone.
You might have even dropped out of school
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Intelligence isn't directly linked to whether you graduated high school or not - and neither can it be directly related to your grades in every subject. Sometimes, highly intelligent people can be restless in a 'traditional' learning environment, or not bothered about the subjects that don't interest them.
People come to you to solve their problems
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If you're the go-to person for friends, family and colleagues to ask about a problem, it's a sign everyone trusts you (and your intelligence levels) enough to know you can help. Whether it's as simple as your grandma texting you she can't turn the TV on, or a colleague coming with a big-brain problem, you got it covered.
You might have been fired a lot
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With the same logic of dropping out of school, being fired from a lot of jobs doesn't mean you're stupid - again, it could just be that you struggle in a 'normal' working environment and your higher intelligence might have made it more likely you butted heads with people who had closed-off thinking.
Especially from mundane jobs
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It's also likely that you struggled with working environments that didn't challenge you a lot. If you're more intelligent, you need something to stimulate you and which doesn't numb your brain, so unfortunately, more simple jobs - like cashier or coffee server - might not have cut it.
You probably don't spend a lot of time on self-care
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People with higher intelligence and brains going a million miles an hour are likely too busy for things like 'a hot bubble bath' or 'skincare routine'. You might try your best with it, but the likelihood is that you'll only remember to have a wash at 2am when you've stopped doing everything else you're doing!