I want to put my money on entrepreneurs who know how to get back up fast after they've been kicked in the gut. They get knocked down just like us, but unlike most of us they take very little time feeling sorry for themselves. I sometimes think to be a great entrepreneur you need to have a low enough IQ so once you're knocked down you're too stupid to lay low, and instead pop back up saying “Hit me again!” I don't think you can learn resilience; it's a built-in attitude.