Halloween is one of my favorite days of the year. I have a strict rule: I don't work on Halloween and I won't travel on Halloween. Not for any reason.

Pushing yourself to be the best is unsustainable. Simply push yourself to be better than the day before.

I never imagined working with CEOs, congressmen or the military, yet I make regular visits to the Pentagon, stop by the Capitol now and then and sit down with leaders of all kinds of companies.

What's important to me is that I put messages out, whether it's a TED talk, whether it's a book.

Trust doesn't develop from always doing the right thing. Trust comes from taking responsibility when we do the wrong thing.

I'm very clear about what I believe.

Work requires effort. Things we love to do feel effortless. Only do the things you love and you'll never have to work again.