Eric does a wonderful job explaining the kind of issues an entrepreneur faces and the kind of mistakes they end up doing. As a case in point, he lists and discusses the mistakes he made and the lessons he learnt while building SourceGear. Very interesting to read and useful to digest.
One loud and clear message is that businessmen should make mistakes (the non-fatal ones, actually). This is not to say 'go out and seek the latest mistake' or write a list of mistakes you want to do today. Heck no. It means that entrepreneurs should not be afraid of making mistakes, neither should they be ashamed of them. Instead, learn lessons and move on. The more mistakes you make, the more you learn and the more you grow. But, those mistakes arise from fearless efforts and bold attempts. So,
Fearlessness in strategy and operation-->Mistakes-->Lessons-->Success
where the arrows (-->) are to be interpreted as 'contributes to'.