Well, many. I think Steinbeck, for example, was one of my favorites, Somerset Maugham, Hemingway. Quite a few.

I remember reading The Making of a Surgeon when I was in probably about the sixth or seventh grade. And that was a book that kind of got me focused, I think, on the career path. And I remember, one thing in there I still remember is that you can always tell you’ve really arrived as a surgeon when the nurses in the hospital ask you to be their physician.

the thesis in the book is that computers need to understand human emotions just the way people do. I read the book and I was just fascinated by this idea. I made that my research topic and it became my obsession and it just really changed the trajectory of my life.

I’d been introduced to Freud through all this because I couldn’t understand why is it so difficult to be brave. There was something inside me that wanted to collaborate all the time with the people who wanted to destroy me, and I was searching for it, and I found there was a thing called the unconscious that everybody has. And you’ve got to be in touch with the unconscious to understand a lot of your behavior. And I read through volume after volume after volume of the collected works of Sigmund Freud.

14. I always played music until then, just like piano lessons. Viola, violin and clarinet as a kid. But at 14 I started playing guitar and I was like, “this is it. This is what I want”. I am so thankful that I had this single mission from the age of 14 till 29. For 15 years of my life I wanted nothing but to be a great musician.

I have nothing else in the works. I'm spending a lot of time learning Chinese and a lot of time being with my boy who is a teenager now and wants a lot of my attention.

In that brief transition time, it felt like the question to ask yourself is what is the biggest learning opportunity? Where can I grow more?

The proudest achievement of my life at that time was that software. Wonderfully organized, extensible, and efficient: the culmination of everything I’d learned about programming in ten years. After a successful relaunch and Christmas rush, I was looking at my plan for 2008 and beyond. All my plans needed a huge effort for little reward, but were required for future growth. I had broken it into about 20 projects, each taking 2 to 12 weeks. But I wasn’t excited about any of them.

Whatever scares you, go do it.

It's not focus, it's an intensity of desire.