Life isn't about algebra and geometry. Learning by making mistakes and not duplicating them is what life is about.

To start your working life after you've graduated from school and university, it takes you a long time to get started in the real world. Today, kids are not out into the workforce until 27 or 30 years of age. By the time I was 30, I had six kids and 60 trucks.

I was a careless Protestant, my wife was a good Catholic, and we had six kids in seven years and I'd endorse that to everyone.

Basically as a working class boy I understand when there's not enough money to put food on the table and not knowing where the next dollar comes in from. When you've been in that environment as a child, you never lose it.

During the financial crisis, I worked with hundreds of executives who struggled as a result of their thoughts about job security. When their beliefs changed, so did their emotional experience - and they were then able to focus on the task at hand more effectively.

My parents never really wanted me to be a musician at all, because in Peru you don't earn any money that way. But when they realised it was genuinely what I wanted to do, they supported me always.

Why are people so obsessed with Pets.com? We shut it down and returned money to shareholders. Besides, there were plenty of other dot-com failures around then.

My next project is 'Venus Vs,' which is a documentary that follows tennis star Venus Williams and her effort to get equal-award pay for women at Wimbledon. Most people don't realize that Venus fought for years to make sure women and men winners of that tennis championship received the same amount in award money.