I didn't see it then, but it turned out that getting fired from Apple was the best thing that could have ever happened to me. The heaviness of being … - Steve Jobs

When you grow up you tend to get told that the world is the way it is and your life is just to live your life inside the world. Try not to bash into the walls too much. Try to have a nice family, have fun, save a little money.
That's a very limited life. Life can be much broader once you discover one simple fact: Everything around you that you call life was made up by people that were no smarter than you and you can change it, you can influence it, you can build your own things that other people can use.

Jobs: As a kid, I read an article in the Scientific American. It measured the efficiency of locomotion of various species on the planet. Bears. Chimpanzees. Raccoons. Birds. Fish. How many kilo-calories per kilometer did they spend to move? Humans were measured too. And the condor won. It was the most efficient. Humankind came in with an unimpressive showing about a third of the way down the list. But somebody there had the brilliance to test a human riding a bicycle. We blew away the condor. Off the charts. This really had an impact on me. Humans are tool builders. We build tools that can dramatically amplify our innate human abilities. We ran an ad for this once that the personal computer is the bicycle of the mind. I believe that with every bone in my body.

Getting fired from Apple was the best thing that could have ever happened to me. The heaviness of being successful was replaced by the lightness of being a beginner again. It freed me to enter one of the most creative periods of my life.