Man oh man you sound like me! You are receiving really good advice here; you want a chance to succeed start hearing it out.
I ask myself the same questions you are asking yourself. ALL the time. I am getting to a place where it really doesn't matter anymore because I am taking care of myself. This is sounds so simple to you actually start doing it. You are in a tough spot because you see your W everyday and the temptation to reach out and grab something you shouldn't is there but you MUST resist because all you are doing right now is hurting your cause.
The things you say sound good to you, but they don't sound good to her. She is telling you the same thing my W told me for months after she left. "you are not hearing me" "you don't get it do you" Well I got tired of hearing it so I stopped asking the question or doing the things that got me that response.