Why do persons with a personality disorder (e.g., narcissism) need therapy to get beyond it, rather than merely changing their ways in light of empathic critique?
Of course, personalities get invested in ways of perceiving, ways of reading, ways of regarding oneself that gave psychoanalysis its credibility (which infused literary criticism long before Deconstruction). The therapeutic calling can be a critical hermeneutics that requires quiet tact. Those who regard philosophy as therapy get there through experience.