I've felt this way (powerless) before...and often. Now, I'm at the point where I am almost convinced that I will never have sex with her again. So, I act very confident, make my choices, and, when I do something that used to make me think "Oh my, she might withhold sex from me as punishment" I say this instead: "What's she going to do to punish me? Cut me off?" It makes me smile, and sometimes even chuckle.

It's not that I've become Mr. Unloveable. I'm still a good guy, I do my chores, enjoy spending time with my kids, and even enjoy spending time with my W. I just feel more relaxed doing what I want to do because, what's she going to do? Cut me off?

This may not work for you, but it does for me.