So I'm going through a divorce now and to take things off my mind, I decided to visit Japan over new years (say, arrive on the 30th, stay until the 10th). I don't seem to have issues getting award tickets.

First question, good or bad idea?
Second, where to go? What to do? Suggestions please! To spend that much time in Tokyo is... umm... seems bit too long! Suggestions for visiting other places in Japan?