With both my parents fitting the narcissism profile, I was eager to read this book as it was billed as being one of the best. The first two or three chapters, on how to recognise narcissistic behaviour and the reactions that narcissism tends to provoke in other people, were really excellent, but the rest of the book I found pretty disappointing.
The author has some frankly bizarre ideas about what empathy is (which is a bit worrying, considering she's supposed to be a therapist!). The "how to empathise" section tells you to pick a feeling (any feeling) that you yourself might feel in someone else's place, and then state to that person "You are feeling ...". The example she gives is that of a student asking "Should we study for the test?", and the teacher responding, "You are feeling overwhelmed and you have too much to do to study for the test". This isn't empathy, it's projection of one person's feelings onto another! Empathy is the ability to find out and respect what another person actually does feel, regardless of whether you yourself would feel that way in their place (e.g. actually asking a student whether they feel overwhelmed, not just grandly stating that this is what they feel!)
Also I found the exercises in the book a bit simplistic. This would be a good book for anyone just looking for ways to "keep the peace" with an N-parent, but for insight and healing I'd really recommend "When You And Your Mother Can't Be Friends" by Victoria Secunda instead.