Do you mean narcissism in the sense of the personality disorder? If so, the symptoms you describe could be due to a number of causes. For example, they're also

Do you mean narcissism in the sense of the personality disorder? If so, the symptoms you describe could be due to a number of causes. For example, they're also consistent with Asperger's. You probably want to be very sure of the root issue before you go down a rabbit hole of trying to fix things. Neither narcissism nor Asperger's can be "fixed". That's why you can't find any books about treating narcissism. You can manage the symptoms of Asperger's, but I think narcissism is much more resistant. Maybe take some online quizzes and then talk to a therapist. They don't have to be an amazing therapist, but it makes sense to get some feedback from a third party who has met many narcissists. They'll be able to tell you very quickly if you fit the type.