what do you do if your family hates you?

my fathers side has repeatedly tried to kill me. They have given me some mild brain damage. they treated me like crap my whole life and I am kicked out because my grandfather was in the military and they did this to him and my dad too. They tell me that no one will ever love me and it has affected my dating life because they make me feel unworthy of love. I am out of my grandmothers will because of this. My moms side doesn't care about me either. I am very hurt and lonely as a person. what should I do?