This book was very insightful into the many forms of psychic attack. When I first saw the title I assumed it was about witchcraft and black magic, but quite the contrary. As far as Dr. Goldbergs techniques, I can attest to their helpfullness first hand as I am a patient of his and I can only say I have never felt better. Forget about the skepticism you read or may believe, his techniques simply work.
I expected a bit more but I admit my expectations were a bit high given that the author is a psychologist. If you're very new to psychic protection you might get some benefit but you're probably better off with another psychic shielding book. That being said, there were a few good points and perspectives and the book uses actual case-histories to make it's point which I always find interesting. If you find a cheap copy somewhere and you have the cash handy it might not be a bad read but don't lose any sleep over it. This IS a "new age fru fru" type of book. If you're looking for clinical stuff this is not what you want.