A few years ago, I decided I wanted to learn to play the drums. I've always loved the drums. Whenever I listen to music, I hear the drums first. I can listen to a great jazz drummer like Art Blakey for hours on end. I'd give up almost anything to be as good as Glenn Kotche of Wilco.

The path to learning the drums is pretty clear. You sign up for some lessons, you get some pads, you get some sticks, you learn some drills, and you practice. And you keep practicing. Every surface—your desk, your leg, your steering wheel—becomes a drum. You get better over time, but you never really stop practicing.

This is how we learn most things. Whether you want to be a writer or a musician or a painter or a baker or an accountant, the way to get there is fairly clear. Not everyone's going to be as good as he or she would like to be, but at least you know where to start. Lessons, classes, books, internships, workshops... All of these things are accessible to most people who want them.

One of the interesting things about picking up the drums was that I realized it had been some time since I had actually tried to learn something new. We spend most of our childhoods learning new things. But as you get older, the frequency with which you develop new talents slows down. Sometimes it stops completely.

That said, when I first started playing, I was bad. I sounded like someone was tripping over a drum set and knocking it on the floor. When you suck so badly at something new, it's comforting to know there are other things that you actually are good at. And being bad at drums reminded me of what I have gotten pretty good at: making money.

Today, I run 37 signals, a software and design firm that I co-founded in 1999. Sales have grown at double-digit rates every year for the past decade; so have profits. (Like many private companies, we don't disclose revenue.) How did I learn how to do this? I have a degree in finance, but I don't remember taking any classes that even remote...