Piece of Shit

I don't know how to stop the voice in my head that tells me what a piece of shit I am. Logically I know that's not true. But when you don't have anyone else telling you otherwise it's hard not to think that maybe the voices are right. I just don't want to be mentally ill. I don't want to have depression or anxiety. I want to be able to just let what she says roll off my shoulders like it's not big deal. But I don't know how to do that. I care too much about her opinion of me. And I want to do what will make her happy and please her. But I don't know think I'll ever achieve that. I don't have a solution and I'm afraid that if I don't find one that I won't make it.