The main takeaway from this book: not all sociopaths are criminals, but they are all assholes.
This book should be fascinating, but instead it is incredibly dull and tedious to read. The author seems much more impressed with herself than she should be--normal if she is in fact a sociopath--but none of the autobiographical stories she's so obsessed with were interesting to read about.
Also, there's something about this book as a whole that rings false. I don't know if it's because she changed details to protect herself/others, or typical sociopathic exaggeration, or if she's actually lying about being a sociopath. Whatever it is, it makes the book even more unpleasant to read.