A psychiatric diagnosis has serious consequences: Diagnosis informs treatment, and getting the wrong treatment can have disastrous effects. Also, a diagnostic label is likely to attach to people for the rest of their lives and have a profound influence on how they define themselves. I have met countless patients who told me that they “are” bipolar or borderline or that they “have” PTSD, as if they had been sentenced to remain in an underground dungeon for the rest of their lives, like the Count of Monte Cristo.