In what kinds of situations are you most effective? What factors strengthen—or undermine—your motivation? People answer these questions in very different ways, and that’s the challenge at the heart of good management—whether you’re managing your own performance or someone else’s. One-size-fits-all principles don’t work. The strategies that help you excel may not help your colleagues or your direct reports; what works for your boss or your mentor doesn’t always work for you. Personality matters.