An entrepreneur must deal with more uncertainty than a professional with a well-defined role.

When I was starting out, I followed along the path that seemed to be marked out for me - from high school to college to law school to professional life.

People don't want to believe that technology is broken. Pharmaceuticals, robotics, artificial intelligence, nanotechnology - all these areas where the progress has been a lot more limited than people think. And the question is why.

Credentials are critical if you want to do something professional. If you want to become a doctor or lawyer or teacher or professor, there is a credentialing process. But there are a lot of other things where it's not clear they're that important.

I think the defining moment in my career is the day that I moved to Nashville - September 1, 2001. That's the biggest step to getting here is making that move. Anything that happens, the wonderful opportunities that happen to you, can't happen until you make that move.

In addition to encouraging failure, I would also encourage companies to broadly create a culture of innovation. That should mean more than just technology and invention; it should mean something millennials know well: Ingenuity.

Experience is a really wonderful thing, and in a way we've been fortunate to have had so many ups and downs in our career, and a lot of struggles and a lot of sacrifices. But again, that's just an athlete's story.

And then 45 years later, as I finished my career in the great city of Cleveland, that was another great way to end my career, going to the World Series.