One of the symptoms of approaching nervous breakdown is the belief that one's work is terribly important, and that to take a holiday would bring all kinds of disaster. If I were a medical man, I should prescribe a holiday to any patient who considered his or her work important.
I'm not a World War II buff. I know a little bit about it, I was taught the other side of the story in school, so it was unfamiliar to me, the idea of a German resistance, and yet it was considerable.