This, to me, is the best counterpoint I've read to Michael Arrington's rant from a few months back on how startup folk need to work harder and stop crying.

http://uncrunched.com/2011/11/27/startups-are-hard-so-work-m...

Arrington is a romantic, and he believes passionately in the romantic mythos of the startup world. That's what drew him to the valley to start TechCrunch in the first place. And that view of the world is warped as hell.

The key is you've just got to match the level of effort you're willing to give to the level of effort required to achieve the goal you've set out for yourself. Not all goals -- including entrepreneurial goals -- require a 120 hour a week personal commitment to succeed.