The problem with New Year's resolutions - and resolutions to 'get in better shape' in general, which are very amorphous - is that people try to adopt too many behavioral changes at once. It doesn't work. I don't care if you're a world-class CEO - you'll quit.

The decent method you follow is better than the perfect method you quit.

People are smarter than you think. Give them a chance to prove themselves.

Companies that start by redesigning the economics of an industry often finish by redesigning the whole industry-and owning it.

The biggest misconception about work is that you need to spend the majority of your time doing it.

The first thing I would do for anyone who's trying to lose body fat, for instance, would be to remove foods from the house that he or she would consume during lapses of self-control.

Lacking an external focus, the mind turns inward on itself and creates problems to solve, even if the problems are undefined or unimportant. If you find a focus, an ambitious goal that seems impossible and forces you to grow, these doubts disappear.