I am gong to. new school but I need help to start fresh?

Ok here's the thing: I am going to a new school because I constantly get on peoples nerves then they get mad at me and they end up hating me. Im starting in the new school on Monday I need help so this won't happen again. I really dont want people to hate me..and I need friends....that is part of my lonelyness and deppression..Please I'm desperate for help. I know I got a bit of ADHD but when I'm at home or with my neighbor I am really nice and caring It just happens when I'm at school! I dont mean to get on peoples nerves but its something I can't stop.. I have been to Neurologists and PhychiIatrists but all they tell me is not to bother my clmates but I need help from real people not some doctor. PLEASE AWNSER FAST