I know this emotion well - it has led me to any number of problems. Some cases where in retrospect I was being a self-indulgent jerk ("What did you think of my performance/presentation/etc?") and some cases where I still feel I was not being harsh but was pointing out valid and relevant concerns, but from both I've learned to distrust this emotion. Perhaps saying what I think is good, perhaps not, but it should never feel _good_ to criticize.