Hopefully 10 years from now people won't even realize we started out selling shoes. They will just think about Zappos as a place to get the best customer service.

Your culture is your brand.

At Zappos, one of our core values is to Pursue Growth and Learning. In the lobby of our headquarters, we have a giving library where we give away books to employees and visitors that we think will help with their growth, both personally and professionally. I can't wait to add The Compound Effect to our library.

Get the culture right, and everything else just falls into place.

Happiness is really just about four things: perceived control, perceived progress, connectedness (number and depth of your relationships), and vision/meaning (being part of something bigger than yourself).

A bigger business is like a cruise ship: There are lots of amenities and you can go a lot further, but it's harder to turn quickly.

If you're worried about putting food on the table or putting a roof over your head, that stress is definitely will contribute to unhappiness, but once you have your basic needs met then incremental money.