... there are other proud people who have low self-esteem. They feel they haven't lived up to their potential. They feel unworthy. They want to hide and disappear, to fade into the background and nurse their own hurts. We don't associate them with pride, but they are still, at root, suffering from the same disease. They are still yoking happiness to accomplishment; it's just that they are giving themselves a D- rather than an A+. They tend to be just as solipsistic, and in their own way as self-centered, only in a self-pitying and isolating way rather than in an assertive and bragging way.

- David Brooks