Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: all serious psychotherapists should read this book

This is basically a "how-to" manual detailing one of the few "empirically validated treatments" for major depression - i.e., a treatment that really, truly helps. Interpersonal Psychotherapy (IPT) is as effective as either Beck's cognitive therapy or antidepressant medications. Since every therapist encounters depression on a regular basis, how can you justify ignorance of this (short-term!) approach? The book is readable and well organized; someone already trained in psychodynamic psychotherapy could probably improve clinical practice based on the book along, though specialized training would surely be helpful as well. The approach makes sense to patients, too!