For example, when I had no one to manage, I had the challenge of having to do almost everything myself. When I learned and earned enough to pay others, I had the challenge of managing them. Similarly, the challenges of wrestling with market and economic swings were constantly changing. I didn’t think about it then, but it’s obvious to me now that while one gets better at things over time, it doesn’t become any easier if one is also progressing to higher levels—the Olympic athlete finds his sport to be every bit as challenging as the novice does.