http://www.hbs.edu/entrepreneurship/resources/

Specifically interesting: Want to be an entrepreneur? part 1 and part 2

And yet, even after reading those, I'm struck by the line from The Matrix:

There's a difference between knowing the path and walking the path.

Entrepreneurship is a contact sport.

Interesting that you used a sports analogy given one of the other recent threads: http://pandawhale.com/convo/169/does-success-in-one-area-of-life-carry-over-to-others