I came up with 40 new business ideas—everything from creating software to setting up hospital chains, since my wife’s father is a doctor and has a hospital. Then I had about 25 success measures that I used to decide which idea to pursue. One success measure was that I should fall in love with a particular business for the next 50 years at least. Very often, people get excited for the first few years, and then, after they see the reality, they get tired of the business. I wanted to choose one that I would feel more and more excited about as the years passed.