Don't be cocky. Don't be flashy. There's always someone better than you.

Help shape the stories that people are telling about you.

We asked ourselves what we wanted this company to stand for. We didn't want to just sell shoes. I wasn't even into shoes - but I was passionate about customer service.

If I was going to go into an office I wanted it to be with people I would choose to be around even if we didn't have to work together and so that was one of the major reasons why I decided out of all the different companies we invested in to work with Zappos.

I think maybe 50 years ago people and businesses felt like they had to choose between maximizing profits and making customers happy or making employees happy, and I think we're actually living in a special time where everyone's hyperconnected, whether through Twitter or blogs and so on. Information travels so quickly that it's actually possible to have it all, to make customers happy through customer service, to make employees happy through strong company cultures, and have that actually drive growth and profits.

Our belief is that if you get the culture right, most of the other stuff, like great customer service, or building a great long-term brand or empowering passionate employees and customers, will happen on its own.

Studies find top 3 most stressful moments in people's lives: death, divorce, and properly pronouncing "Worcestershire sauce."