I enjoy challenging a person's ideas. No one loves a good and passionately fought argument more than I do. This isn't about being tough-minded and straightforward. That's the job. But so is sensing when to hug and when to kick. Of course, arrogant people who refuse to learn from their mistakes have to go. If we're managing good people who are clearly eating themselves up over an error, our job is to help them through it. That doesn't mean you have to take it easy on your top performers.