Passion

"If you're going to work...
work hard.

That way, you'll have something to show for it.

The biggest waste is to do that thing you call work, but to interrupt it, compromise it, cheat it and still call it work.

In the same amount of time you can expend twice the effort and get far more in exchange."

http://sethgodin.typepad.com/seths_blog/2011/06/if-youre-going-to-work.html