There’s an old story about personal excellence that goes like this: A man who walks by a construction site and sees three workers, each pushing a wheelbarrow holding one enormous stone. Out of curiosity, he asks one of the workers what they are doing. “What does it look like?” he says with a sneer. “I’m just hauling rocks.” Unsatisfied with that answer, the man asks the second worker with a wheelbarrow the same question. Without even bothering to look up, this man says “We’re putting up walls.” Frustrated, the man tries one last time. “I say there,” he asks …
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