It's not just contented men, though. Very depressed people will also resist any sort of change to their routine since they assume it will only make matters wors

It's not just contented men, though. Very depressed people will also resist any sort of change to their routine since they assume it will only make matters worse. I can't imagine what it feels like to spend years trying to prove something like the Poincare conjecture, then succeeding, then trying to find something else to do. I don't get the impression that Perelman is a happy man, though.