I have also made this a point in our company: We need to stop taking baby steps and start thinking globally. It really seems to be helping.

In 2006, Yahoo wanted to buy the company for a billion dollars and everyone on our management team wanted to sell it and the board tried to fire me and basically in the next year, everyone else on the management team left because I hadn't done a good job communicating. I don't want to blame them. I hadn't done a good job communicating the long-term vision because I didn't, I wasn't thinking about that at the time.

There just aren't that many opportunities in the world that are that big, and for a company like Walmart that needs to move the needle in a big way, you have to take some big bets, but if you're going to take that much risk, the reward has to match up.

Start small, think big. Don't worry about too many things at once. Take a handful of simple things to begin with, and then progress to more complex ones. Think about not just tomorrow, but the future. Put a ding in the universe.

So probably from when I was 12, I knew I was going to start a company eventually.

We believe people with passion can change the world for the better. That's what we believe. And we believe that those people who are crazy enough to think they can change the world are the ones that actually do.