It strikes me that many very successful people are incredibly smart and driven but seem to have the emotional maturity, or personal introspection, of a 10 year old. Maybe it's just a necessary combination for this kind of success, but it's also a bit paradoxical. Case in point: buying 5 mansions in Bel Air when you spend all your time at work, literally sleeping under your desk. Another is insisting on burning the candle at both ends by sleeping 4 hours a night, when it has been proven beyond doubt that it's extremely counter-productive to do so, both in terms of mental ability and overall health.