i know this seems hard but i would sit down with your dad and try to talk about the past and maybe if he has changed he will apologize. its worth shot.but if you cant realize that your, your best friend and i know this might sound crazy but be there for yourself talk to your self ( not in public) bring all the emotions out and them let them go just forget. it is possible i do it almost every night.

this may not work for you but what i do is create ridiculous stories in my head where i am the hero and it boast my self esteem. like i said it might not work for you but its worth a shot. if your gonna try it go some place quiet and dark and lay down or sit and close you eyes and just think put yourself in a story where your the hero.

BTW i think this makes me sound young. 1 im a bad typer 2 im a bad speller 3 im lazy. but im 19 and have been escaping in my mind my whole life.