As I've explored here before, getting criticism on your work can turn us into defensive babies--even if we asked for the criticism in the first place. You might never be able to take a less-than-loving critique in stride, but a good writer can at least learn to try to take something useful out of the criticism, even if they don't want to listen to it at first. Cynthia Morris at Absolute Write explores the five phases of feedback: denial, depression, integration, enthusiasm and acceptance. Although she might want to put something in there about how to convincingly smile as somebody tells you what's wrong with your work.