The start of the day is often the best time to get things done. This is somewhat related to willpower.

Resolve to do one thing every day that you fear.

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.

Food became for me a way of becoming self-sufficient with my hands, to regain manual literacy, which I think has been lost on our generation and certainly younger generations. Very few people can actually make things with their hands and do things with their hands.

At its core, I don't view Facebook as a social network. I think it could become the driver's license of the Internet. And beyond that, it can become the pipes and the plumbing upon what most of the Internet is built. I think it's very well positioned.

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

Three ingredients of luxury lifestyle design are time, income, and mobility.