Great things in business are never done by one person, they're done by a team of people.

But I noted with real satisfaction how well ex-footballers seemed to have leadership qualifications... I believe that football, perhaps more than any other sport, tends to instill in men the feeling that victory comes through hard - almost slavish - work, team play, self-confidence, and an enthusiasm that amounts to dedication.

When I saw Jet.com, I saw a strong team.

When I joined Walmart, I just had a team mindset, but I look back on it now, and I realize some of those early jobs I had, I was trying to help other people and rally the team. It ended up people started looking at me as a leader.

The thing that's been consistent is that this is a team sport and nothing happens through the work of just an individual. We all do this together and it doesn't matter whether you're going to do a startup or you're at a big company, that's going to be the case. And what sport taught me was the importance of that and how to treat a teammate, and how to work together.

None of us are as creative as all of us.