...when you can't stop saying sorry for everything...

Does anyone have any suggestions? I can't seem to stop apologizing for everything I do, even when I haven't done anything wrong! It's getting to the point where I think I'm annoying everyone around me by doing it. I don't want to do that, but I can't seem to stop. I don't want to lose my friends, which is why I think I'm doing it, but if I keep it up, I will lose them. So I guess what I'm trying to say is:

HELP!!!

PS: Does anyone know how to get rid of seasonal depression? It's kind of irritating >< Or maybe I just need to get laid... that would solve a lot of my problems I think -nods-