Just as the title says, I have a bit of a problem.
No matter what it is, I have a compulsion to “win.” For example, I have a weird compulsion to always be the first one to finish a test (I get really, really peeved if I’m not); therefore, I usually don’t check my answers (unless it’s math–I make too many dumb mistakes in math, although some are a result of me checking my answers). I also always have to raise my hand to answer a question in class. If we’re playing a competition game in class, I want/need my team to win. When I hear I got a higher score than someone on something, I’m happy, even though I also feel horrible about feeling happy.
Why is this so? And how do I get this competitiveness to go away? I really don’t like it, since in the end, it ends up making me unhappy if I don’t “win” something.
I feel like I am also the same way. Just accept it… be happy with who you are! If you are really a competitive person there is nothing wrong with that. In fact, instead of being unhappy when you don’t win something… use it to propel yourself even further forward and do better the next time. COMPETITIVENESS is the reason why society/technology has evolved so much. How do you think we are able to communicate on this website right now? Because of competition! Embrace it.
If it gets to be a serious problem (Like you act out when you don’t “win”, or start hurting those around you) then see a professional. Otherwise, a little competitiveness is a good thing (“Nice guys finish last” idea) just don’t let it get out of hand.
I’m the same exact way. It’s getting to be an issue for me 
I feel like a terrible person, so I’ve been trying to be more normal…
If people always expect you to win, they’ll put more effort into competing against you, and that makes it less likely that you’ll win. (This is my theory, anyway.) You have to pick your battles carefully.
same with everything you said except for raising hand a lot. competitive as well
No but literally I’m like Hermione with the hand-raising. And I feel like it’s annoying to others (but I have the strange compulsion to so I do it anyways). I know for a fact that some of the juniors in my precalc class don’t like me because I raise my hand and answer questions too much (there are others who like me–mainly the ones who sit nearby me as opposed to those on the other side/back of the room). And the thing is, sometimes I’m not prepared to give an answer (for example, in Spanish: if it’s for something we’re supposed to do off the top of my head, half the time I’m really eloquent about it and the other half I mess up majorly).
I like to win, but I’m not always first when it comes to test taking, I’m the highest, but not the first. Yesterday, I was the penultimate person to finish, which was pretty bad for me. That was the slowest I had ever taken a final in my life.