My dad is an obsessive psychopath. i wanna know how to help him and also i'm scared to be one too. how do you know if your a psychopath?

You can't help him: Antisocial personality can't be treated, and especially not by family members. If he is as you have described, he's incapable of caring about the legitimate rights of others. If you have emancipated, keep a safe distance and do not antagonize him; you may need to pretend to love him. The very fact that you're concerned you may be like him tells me that you are not.

No conscience: Little to no conscience or sense of right and wrong, inability to empathize with others, a tendency to objectify people around them, longstanding pre-adolescent troubles with authority figures and the law, an in difference to social mores, impulsivity, manipulates others,and cruelty to people and animals that goes back to childhood,.