I think the most important thing is just if you hire people whose personal values match the corporate core values - and not just the stated ones.

Service Over the years, the number one driver of our growth at Zappos has been repeat customers and word of mouth. Our philosophy has been to take most of the money we would have spent on paid advertising and invest it into customer service and the customer experience instead, letting our customers do the marketing for us through word of mouth.

Our society in general has is more money equals more happiness and all the research has shown that that's true up to a point, up until you can get your basic needs met, but then really there is other stuff that has a much bigger impact on your happiness besides just money.

Usually my 'a-ha' moments are when I'm not trying to think of how to solve a particular problem.

Whatever you are thinking, think bigger.

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.

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.