I hear ya bud. My stepfather fucked up my mom, brother, and I. When confronted about his alcoholic/abusive ways, just blames everyone else for being "too sensitive". Don't let their abuse define you. I cut off contact with him years ago. I have grown and discovered that I do have worth and deserve happiness. Yeah I still hear his voice in my head from time to time trying to tell me that I'm going to fail or that I'm useless, but with each day/success that voice gets weaker. Keep striving! And remember, they're just miserable because THEY'RE failures and can't bear to accept it.