stop caring what other people think

I do care about what other people think, all the time. I try not to, but I do it anyway. I can’t even write an entry like this without worrying what you people might think of it. I’ve tried lots of tricks, but none of them have worked.
And I’ve got another a problem too. I have a crush on a boy in my class, and I don’t want him to think I’m really wierd. So even if I do manage to stop caring, I wouldn’t dare to, because of this boy. Can anyone help me? Please leave a comment!