Tell me how to get over this hurt ?

I am 28 years old and I have been thru so much bad stuff . Ive been severely neglected and no one was there for me for most of my life . I have been abused over and over again . When I was younger some of my family members were very mean and cruel to me . My dad is dead & my mom left me but she raised my younger siblings together . My step grandmom & grandpop raised me but they were never there for me emotionally . My step grandmom used to touch me alot on my butt and sometimes she touched my privates but she said she was tickleing me . I was around 5 years old and this went on for years . I asked her to stop but she didn't . It really affected me and I was sexually active when I was being touched by her around five years old . it ****** up my personality and I rebelled and I was very mean . Ppl made fun of me bc I was sexually active that young . my moms twin used to abuse me and I always told my step grandmom but she never did or said anything . My aunt is 19 years older than me but she used to always try to fight me I was like nine to twelve years old . She would try to fight me over my own things or toys or even cds . No one cared . I have too much anger bc its much worse than this but I don't have the space . No one protected me and I never felt loved by anyone only my real grandmom on my dads side but she died and thats when I started self mutilating att age 11 but no one noticed only one of my teachers but she thought I was fighting and I got in trouble bc I didn't tell her the truth . I want to get over this and try to be happy but it seems impossible . What can I do ? Ive been in psychotherapy for many , many years but it helps me to remember things that I made myself forget .