Thanks you both for your insights. I understand what you are saying and for the most part, I am trying to do that.
I am not trying to please them. I agree also that it is mainly their problem, not mine. But it still hurts to be treated so, especially when I don't think I deserve it.
Today when I realized I was feeling sorry for myself, I knew that I had to pick myself up and snap out of it. As I said before, I know that I cannot change these people, and I am not even going to try. But I want to change my attitude so that it no longer has power over me. That is when the idea came to me that if I could forgive them, I would feel better. It dosen't matter if they know about it, acknowledge it, or even care. It is not about them, it is about me. If I forgive, it dosen't make it right how they treat me, but it will help me feel better. The problem is, I am a step by step kind of person. It is one thing to say, I want to forgive someone, it is another thing to do it.