Reply To: Will learning Mussar help a psychopath or Narcissist? Among others.

Little, it depends. Really there is no better Mussar than learning Gemara and Halacha (Baba Kama 30a). Some people need to be hit over the head with a hammer. Rav Soloveichik recalls in “Halachic Man” that Rav Chaim compared it to castor oil – it cures the sick and makes the healthy ill. However, a person must first want to change. Even then, as Rav Salanter said, it is harder to change a bad personal characteristic than to learn all of Shas.