There have been books written about the “10,000-hour rule,” which claims that the key to becoming a success in any field is getting 10,000 hours of experience in what you want to be successful at, or the theory that you need to put in that much time to become any good at something. As it happens, the Beatles spent 10,000 hours playing together in clubs in Germany in the early sixties before starting their recording career, and Bill Gates spent that amount of time programming his high school’s computers in 1968.
