Look for what is useful: Criticism can be destructive. But it can also be constructive. The challenge is to look for the worthwhile insights. They can help us grow, and true success often comes through the way we respond to them. David Allen uses the metaphor of a rocket to illustrate this truth. “Much of the energy in propelling a rocket,” he writes, “is spent in course correction—it is, in a way, always veering out of control and off target. It achieves its goal precisely because it has a responsive feedback mechanism that prevents it from wavering too far off its designated target.” In other words, constructive criticism can help bring us back on target. It can serve as a useful course corrective.