I have mixed feelings on this one. While I appreciate the guidance suggested to help the reader "deal" with the narcissistic person in their life, as well as providing an insight into the personality disorder, i also feel like more insight into the long term damage (emotionally, physically, financially) such a relationship can cause should have been included.
For me, it almost felt like: if your spouse beats you when dinner is not on the table at 5pm, GIRL HAVE THAT DINNER READY BY 4:55PM rather than: if your spouse beats you when dinner is not on the table at 5pm, GIRL LEEEEEAAAAAVVVVEEEE! IT AIN'T GETTING NO BETTER!