Spot on with "Why are you going for a 'home run'?" as being the most important question. Is it money? You want a challenge? Happiness?

Article below is a nice piece on why happiness = success:

http://hermannk.com/happiness-success/

I love the quote from Dave Greiner - " These days, my idea of success is a well-managed balance between time with people I love and a project I’m deeply passionate about. Right now, that’s Campaign Monitor. Time spent with each one of these has a huge impact on how much I enjoy the other. When I get that balance right, I’m at my happiest. And in the end, isn’t that what success is all about?"