Nothing is inherently wrong with pride. You basically answered your own question; pride becomes detrimental when it becomes elitism. Furthermore, pride, prejudice, and pretentiousness tend to mix poorly. It's one thing to have pride in your work and accomplishments, it's another to boast and brag about them to others in order to boost your feeling of self-worth. It comes down to Ego VS Self-Esteem; they are very alike, but the ego is unstable and must be constantly fed validation in order to keep from shattering.