For the unskilled, progress is easy. Given commonsense conditions, it’s almost guaranteed. In the words of K. Anders Ericsson, the world’s leading expert on expertise, novices improve as long as they are, “1) given a task with a well-defined goal, 2) motivated to improve, 3) provided with feedback, and 4) provided with ample opportunities for repetition and gradual refinements of their performance.”91 Before long, though, the benefit of mere practice plateaus. To really get good at their jobs, people must advance to deliberate practice. They must exit their comfort zone—raise the bar, struggle
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