Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is a waste.

I suffer from profound PTSD. In the hopes of getting off the cocktail of drugs I was on, I turned to this book, and a psychologist trained and highly reccomended.For me, it was a waste of time and money. I strongly urge people suffering to avoid this pap at all costs, This stuff did not work for me, and was a waste of time that could have been used in better therapy.I still have PTSD, and its getting worse. Please, people, don't repeat my mistake, this book and the theory behind it...is pure psyco-babble.It is as though the book's sole purpose is to sell books, and hope,without delivering on the latter.