Not long ago a friend told me one of his co-workers had been promoted above him. "You wouldn't believe this guy," he said. "Power has gone to his head and he's becoming impossible." "How's that?" I asked. "Well," my friend said, "when I'm late even if it's only 10 minutes he says something about it. And he's always on my back about meeting projections. He used to be great to work with, but now no one wants to be around him."

Unfortunately, my friend's attitude reflects the attitude of many people. They don't understand …