Some also just see a fulfilling life differently. Some people's goal in life is to have enough money to get by, with a wife and kids to spend time with, or some time to potter around on hobby projects. Some people's goal in life is to have a break from always working, from always striving to be great.

Alternatively, some things you can be great at without anyone noticing. How many of those people you worked with that seemed to be just going though the motions at work, were really great parents to their kids at home, or threw really great parties, or had a really project at home that they never talked about?