"Rudolf Bing decided when he was twenty years old that he would become the manager of the Metropolitan Opera by the time he was thirty," she said. "World War II was the only thing that got in his way." She took a piece of paper and drew a straight line with an arrow on the end. There was Bing. There was the Metropolitan Opera. He went straight for it.
"He focused on one thing," she said. "You are focusing on too many things." She drew a number of zig-zags. "Acting. Drawing. Writing." I nodded. Yes. All these things were good. Clearly, however, I could see that Rudolf Bing was outpacing me. "Choose one thing," she said. "Focus on that." I nodded. I never forgot the talk or the diagram. But I never focused all that well, either, and I never caught up to Rudolf.
So there you have it. Monomania is the way to success in life. Unless it isn't. Some say that in the modern economy you have to be nimble and willing to try a number of things. Would you like fries with that?