"Certainly, creative activity is often full of frustration, simply because you can't always make the life of creative work that you imagine. You may be just shy of the required knowledge or talent, or you may have unreasonable expectations of yourself. In either case, the self is usually implicated in creative work, and you might will get so much ego into the work that any flaw will make you insanely frustrated. Narcissism, which is sometimes rooted in the failure to give yourself enough approval, is more painful than it looks, and narcissism creeps into creative work among the most inspired and altruistic people."
~Thomas Moore, Dark Nights of the Soul