Kimbal Musk

I did a business in a box called College Pro Painters. They taught you how to paint houses, how to hire and fire, how to sell, how to deal with customers. You got a one-year franchise. It was the hardest year of my life in terms of hard work. I won manager of the year. It was very successful.

At one point, my house was a school for autistic children. I opened up my doors to about 30 kids and their families at the time. I was turning into Mary Poppins because I had to do something for these kids who have nowhere to go. So my house was the school for two years.

When I have a creative insight, there is a high. I think back in the day, I made music as much as I did because it made me feel so good. I think you could argue that there is a creative addiction - but, you know, the healthy kind.