I've heard about NoFap before but I've finally decided to try and make a commitment to it. It has been two days and I haven't looked at any porn. I haven't fapped for a few days anyhow but am definitely going to hold off on that as well. I've also tried to stop ogling women as I realize it's along the same lines, now I don't make it awkward, make comments or go beyond a quick glance but I'm sure it has the same effect of stirring your appetite needlessly. I work in NYC near the fashion district so there are a lot of beautiful women and with the weather getting warmer it's hard not to look but I hope all of this helps. My actual libido has been quite low for sex, my wife is almost always willing, time and energy permitting, but my drive just isn't there anymore. I don't think it's a thing with being with the same person for years or getting older and out of shape - just like my libido or something is out of whack. I'm hoping NoFap and NoEye will help.
Ogling at women would trigger me too. When I stopped, I felt more respect for myself and there's power in knowing that true beauty resides within. This is a great step your taking and you will see improvements in your relationship with your wife. I suggest you explore this forum and see for yourself the many examples of couples reconciling and growing together rekindling the fire between them. Wishing you success on your journey.
