[jmduke]

nota bene, as I've heard many variations on this theme in the past:

When your work causes your personal life to suffer, your manager hasn't pushed you to the limit. He's pushed you past your limit.

[Gibbon1]

First real thing I learned early on was, don't let your manager hurt you. As a young engineer you have 30-40 years of game to play. And your manager will happily sacrifice that to make the next deadline. When you're done, he's done and will get rid of you to make room for the next guy.