Admittedly, being different hurts sometimes. I've always been the different one, never really fitting in with any group (or stereotype for that matter). Ethnically I am a strange mix. Not telling you what but I am rather strange.
And yet I'm content with who I am, and this is why:
Being different tests the people around you
What I mean by that? It tests how shallow your so-called "friends" are. maybe you like red while the rest of them like blue. straight off, that might be a 10% drop of friendship, or it may not matter. Maybe you have white hair at the age of six. It happens. Maybe you're a girl who doesn't like to wear short shorts or fitted shirts.
The point is, the only ones who DO matter are the ones who DON'T CARE. Which brings me to the next point:
You will probably get better friends who actually relate to you
For lack of a better term, this is the gist of it. Being different roots out the shallow ones who will only help you if you become a sheep like them. A herd of sheep will avoid the lone wolf. The result? Only the ones who truly care about you for who you are will be there when you're in a slump. Your "lone wolf" status will eventually go away, and you'll have yourself a good group. Granted, this may take a while. Especially when you're in your teen years, when everyone's trying to fit in and find their own circle of friends.
You'll thank yourself later
Look back to who you were five years ago. How were you in kindergarten? First grade? Second? You might not have liked how you were. Maybe you collected those silicone bands that everyone else liked but you really didn't, maybe you were hanging out with a group of friends you just didn't relate to.
Realize that popularity doesn't matter. The sooner you realize this, the happier you'll be. Why? You'l have the pride of not being a sheep way back when, and then you can pass the lesson on to your grandkids.
Life is monotonous
Don't even try to argue this. We all go the same route to school, same route to work, we take the same bus, pass the same buildings, see the same people.
Being different, no matter how you are, always makes for some conversation. Not only that, but people will have something to think about other than the hypotenuse of a 30-60-90 degree right triangle. Who knows, you may even start something you can be proud of!
Admit it: every so often, that spitball that the class clown fires toward the teacher is funny when it's right in the middle of a boring piece of work. When the guy next to you cracks some obscene joke, it makes you laugh, even for a little bit, and then you feel a bit better as you continue. Breaking the monotony is a good way to make friends who find you interesting when the rest of the world is not.
There are others like you
And none of them will ever find you if you keep hiding behind things you aren't. Not being yourself makes you lose the opportunity to make friends who are just like you; people you can actually relate to.
I'm not saying this will happen overnight. All through elementary school, I hung out with a group of kids who were boy-crazy and immature with celebrity crushes that I found no sense in. I was the one who'd advise them not to try to date that one boy, only to listen to them bawl over a rejection. But as soon a I got to middle school, I made friends with equally weird people. I accumulated more great friends who were just as weird in high school, where I stand today.
And I've never been happier.