Passion and Persistance
David Hornik's is one of my favorite VC blogs and his posting on Tim Westergren who founded Pandora (Savage Beast) is especially inspiring.
Passion has always been talkd of as the most important ingredients for entrepreneurs (Passion creates Vision and vision creates success), and I think Passion has to be necessarily complemented by Persistance to create success stories. It's fascinating to read Tim's committment to create Savage Beast, and the way he went about founding the company all along.