Several of the better-known tech CEOs in San Francisco have asked me at different times for an identical favor: an index card with bullet-point instructions for losing abdominal fat. Each of them made it clear: “Just tell me exactly what to do and I’ll do it.” I gave them all of the necessary tactical advice on one 3×5 card, knowing in advance what the outcome would be. The success rate was impressive … 0%. People suck at following advice. Even the most effective people in the world are terrible at it.