Burnout is a serious problem with many possible causes, but Googler Marissa Mayer's theory: Burnout is caused by resentment.
That's according to a talk summed up by Colin Nederkoorn, who explains further:
When people have to make sacrifices for work -- like missing their child's soccer game -- they end up being resentful. She is proactive with her employees to make sure they don't experience lots of resentment-causing activities. If being at Tuesday night dinner with friends is the one thing you need to keep you happy, you should be there every week.
Nederkoorn then offers his must-have list of burnout prevention, which include favourites like exercise, eating well and sleep (crazy, right?). To that end, we're curious: What do you do to prevent burnout and resentment for your job?
Burnout is caused by resentment [Colin Nederkoorn]