CVA, I know what that feels like, feeling like everything you do is being unappreciated, and being criticized, when you do make a mistake is no picnic, either, but remember, you are both only human and if she is criticizing, she is at least taking mental notes of you, she is still interested in what you are doing, To me, (and this may just be my thinking now, with having no real contact with my W) any attention is good attention, it means they are still there in some way, shape or form. Remember, even people who have been together forever, still fight, occasionally.
I know it is hard but try to be happy when she criticizes you! Let her do it! try not to get so defensive, but stand your ground, if you feel you need to, then just agree to disagree. In short, man, don't let it get to you, you are better than that, now. Take care.
