There's a difference between enjoying your job and not having any desires to do anything else. The former is normal and healthy, the latter is (imo) not a good strategy for working efficiently. I love my job but I don't think I'd be better at it if I poured 100+ hours/week into it. I'd probably just feel burnt out and unproductive.
Maybe so. Probably so. Most people. But I'm having a difficult reaching the bottom of the binary declarations up-stream. Commenter #1 said, essentially, "Loving work the most is key". Commenter #2 responded (I summarize): "Nuh uh."
I don't think anyone said anything about 100+ hours/week. I was hoping that commenter #2 might appear and give us some deep insights, but that appears to have been a bridge too far...
I don't have a 9~5 working for the man, but there is very little that happens during my waking hours that I wouldn't classify as related to work. I'm fortunate that this is not one task, so it doesn't weigh on me like fighting with a C compiler while sitting under florescent lights in a cube farm might. That's kind of work is fine - I like that too - but I couldn't do it for more than about 70-80 hours/week.
For athletes, the most important part is recovery. They only spend 3-4 hours per day "working", the rest is spent traveling, preparing, eating and sleeping. The key is good recovery, to be fully energized and focused at "working" sessions, for maximum quality (and productivity).
It also helps if you have a coach, a manager and a private chef. And I think the same also applies if you want to be a successful entrepreneur: Quality over quantity. You have to love it though, because it's often hard work, and painful.
