Dave, I will try to help. Since I am in the same boat as you (scarily, spookily, eerily the same), and I have not figured it out for myself, I'm likely to be of limited service, but I'll try.
I think your W is actually in denial about the problem. I don't think she's gotten real about it at all. I think if you could hear her thoughts, she'd be thinking that YOU are the one with the problem, and it's that you're over-sexed. She'd say you just need to calm down, jerk off and leave her alone. That's what I'm getting from the available evidence. I could be wrong.
If I'm right, then what you have to do is make her see what the problem is - force her to get real about it before it's too late. You might even have to lead her here and get her to read your posts and ours. I do think sometimes these women want to remain in denial, because they think it's easier that way. After all, WE're the ones who brought this problem to THEM. They want US to fix it.