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.

As a leader, I am tough on myself and I raise the standard for everybody; however, I am very caring because I want people to excel at what they are doing so that they can aspire to be me in the future.

Helping other people develops your leadership skills, and people start to see you as a natural leader.

There are times when a leader must move out ahead of the flock, go off in a new direction, confident that he is leading his people the right way.

That's one of the best things about my job: I get to tell the world about the innovative and meaningful things our people are doing every day.

Let me define a leader. He must have vision and passion and not be afraid of any problem. Instead, he should know how to defeat it. Most importantly, he must work with integrity.