Book recommendations for building self-worth

I have a very low self-worth for myself to the point that even if someone beats the hell out of me, i would not get angry with him. This is not because I am a pacifist but rather because I see myself as being worth not much more than a piece of stone. I used to think that perhaps achieving something significant would boost my self-worth. But I have come to realize that I am caught in a downward spiral, that is, low self-worth causes poor performance, and poor performance perpetuates low self-worth. I am already working quite hard, but this low self-worth is holding me back. Can you guys please recommend me some books for building self-worth?