I have been following this thread and the first thing is:
YOU ARE WORTH BEING TREATED WITH RESPECT.
YOU ARE WORTH BEING TREATED HONESTLY.
You have taken a huge step coming here and recognizing a problem. Welcome to recovery road. It is not an easy path.
If you can I will suggest you read CoDependent No More by Melody Beattie. I have and reading the book the first go around left me embarassed at myself. It was like she saw in me and I was ashamed.
Well, I started to do what she said in the book to do and it has helped a LOT.
You have value as a human being and you need to realize that. You have likes, dislikes, feelings and intelligence which you need to see in yourself.