"The risk of failure is a very personal thing. One of the quotes I like, I think this came from the famous basketball coach from California - John Wooden - is that, "Successful people - winners - do everything necessary to prepare to win, without the certainty of winning." Everybody would do everything necessary to prepare to win if winning was a certainty. So you're willing to put yourself out publicly and privately and say, "I'm going to do this.""