I bite my lip too, not very hard most of the time.
I struggle with looking people in the eye. It's very unnerving, I used to get in trouble with teachers a lot about it back in the day (the whole "look at me when I'm talking to you" kind of thing).
I also have a very hard time controlling my temper and lose it pretty often. It's happened on here before - anyone who's witnessed it or been targeted by it, I apologize once again.