Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 1 star for the contributors, 0 for the author, 1 for the book overall.

This book seems to be an attempt of the [...] author to be popular in his\her small circle that unfortunately turned to a disaster. Boy, what a disaster! Contact information of all contributors are given in extensive details after each contributed article which is the only value you get from this book after you end up with a huge headache of confusion...contradictory information of all sorts about hypnosis...blah blah blah..[...]