Yea, I know it seems impossible. But literally practice makes perfect. I find that I do not communicate or share feelings with the wife very well. How will I get better and enjoy it more, sheer repetition. I need to get more comfortable with it, then it will be less painful to do the next time. Here is a link that might explain it better from a TRUE relational expert:
Basically, what has to happen is YOU need to create teh best conditions possible for your wife to be sexual. Then SHE must be willing to spend several weeks experimenting and controlling the sexual meetings until SHE finds what works best for her with the LEAST amount of effort. SHE needs to find what is easy for her, and also to get in touch with her body more. FIND WHAT WORKS!
But like you say, how to convince a ND women to have sex EVERYDAY for several weeks. That should have them rolling on the floor in laughter for a long time!