1. Find out what she wants and needs from the relationship and make sure she gets it. That is probably the best way to get a spouse off your back about something. (My ex husband and I could have saved thousands of dollars on furniture if he had just been willing to talk to me and pay attention to me. I really wanted his attention, not a new couch, but couldn't get it unless we were doing something like shopping for furniture.)
2. Work on rearranging your life so other stuff doesn't suck up so much time. Maybe shorten your commute, hire a maid, or in some other way make more time so you can pay attention to the wife and also work on your ideas.
3. You also might check out this previous discussion: http://news.ycombinator.com/item?id=1527830