The brain is where most people really screw up.

Most people are good at a handful of things and utterly miserable at most.

Having a size 9 foot is fantastic because almost all of the shoe companies do their prototyping in size 9, so if you visit a place like Nike headquarters, you can try every sort of wacky, out-there model.

Focus on impact, not approval. If you believe you can change the world, which I hope you do, do what you believe is right and expect resistance and expect attackers. Keep calm and carry on!

Excitement is the more practical synonym for happiness, and it is precisely what you should strive to chase. It is the cure-all.

The key to having more time is doing less, and there are two paths to get there, both of which should be used together: (1) Define a short to-do list and (2) define a not-to-do list.

There is an infinite selection of things that I could test in life, so I generally will look for a critical mass of word that comes back to me. At this point I have hundreds of friends who are the best at what they do, arguably number one in the country or in the world. I will oftentimes just kind of throw a volley out to people, ask them what they're obsessing on or what they find interesting that's on the fringe. If the same answer comes back a few times, I'm like, "Okay."