Ii believe the best action you could do right now is get a full time job. The money will help, the interaction with others will help and most of all , your self esteem will improve. It doesn't have to be a career, just a job.

As for your mom, give it a rest. Fighting her is a futile effort right now, because she has all the power. Once you get some new life experiences away from her, the way you view all this may change.