Now, I find this confusing. If you're having trouble writing, the last thing you need is another book, competing for your attention.

When Feynman came back from work on the Manhattan project, he felt fatigued and found he had no interest in physics or math anymore. He could hardly work. Then he noticed some interesting lights in the cafeteria and started trying to describe their shape mathematically. After spending a couple of days on it, he was excitedly telling his friends about the interesting work he'd been doing; they were confused as to why he was doing anything quite so useless. He insisted that was the point; he was doing something fun and it got him back into working on interesting physics problems again.