Tony has been so successful that he's been invited to speak at entrepreneurial conferences about helping other people reach their goals. "Do what you would be passionate about doing for 10 years, even if you didn't make a single dime during those 10 years, you'll end up happier," he says. "And kind of the ironic thing is if you do what you're passionate about, the money will just naturally follow on its own."
 
Another benefit to finding your passion is that employees as well as customers can sense your excitement. "That's how we've grown over the past nine and a half years is just through customers being very loyal...but not just loyal. ... They're actually spreading the word about Zappos," Tony says. "When they call us, they see that we're real people and that we actually are passionate about the customer service and want to help them out."