2) Learn a musical instrument and pour your soul into writing songs.
3) Remind yourself daily that this is a pretty big world and the petty shit that transpires in school absolutely, positively will not matter the moment you graduate.
4) Listen. Don't wallow in your own thoughts while others speak, but condition yourself to be receptive to what others are saying at all times. The more you listen, the more you will empathize. The more you empathize, the greater your sense of purpose in the greater whole of society will be.
5) Spend less time online and more with real person-to-person interaction. But choose those people wisely.
I was in your shoes 20 years ago, in a time when doctors didn't hand out psychoactive drugs to minors like sweet tarts. I learned bona fide coping skills. Without revealing the intimate details of my life, the zit-faced, do-gooding 98-pound weakling who was terrorized by the cool kids for most of his grade school life is now a (knock on wood) successful businessman with a great home, a loving wife and child, a couple of satisfying hobbies, and time enough to hang here with you folks.
I don't think about my hometown much, nor do I dwell on my past. The day I left home for college, none of the crap was relevant any more. Only the academic and people skills I'd learned on the way.