Ironically, it is an original username. What you refer to as "OCD tendencies" can have some positive effects -- making you very diligent in your academic work, careful, etc. But of course it can also, at a certain point, make you miserable. So a key is to channel the positive elements, but shed the stress, etc. (Of course, when I say "channel" I mean to focus your direction -- I don't mean "channel" as in some insane person who thinks he can talk with spirits or speak to or on behalf of dead or imaginary people!).
There are lots of people who have done that quite successfully. I assume you are probably seeing a therapist. But if not, that could be helpful. We all tend to think our situation is unique, but it rarely is. Your situation is actually quite common. A good therapist will have some perspective that you would not have, and can very likely help you to help yourself.
Social isolation is another thing that can be tough, particularly in high school. But again, you are not alone there. It is VERY common. I will say that it tends to get much better in college. I have known a fair number of kids who has pretty miserable social experiences in high school, but did great socially in college. It is just a totally different world. I know that does not help you much now, but it is something to look forward to.
If you stick around here a bit, you will probably get some good insights and advice. And you may be able to help some others here. A fair number of kids your age come here, and they could use the perspective of a guy your age (rather than people my age -- I have kids around your age!).
You sound like a smart person. Once you get the issues you are facing under control -- which you will -- you have a great future ahead of you. And the things that you will have overcome will make you a stronger and more compassionate adult.