Instruct: Classify a given review into positive or negative sentiment.
Query: THIS BOOK ISN'T WORTH THE PAPER IT'S PRINTED ON

The 3 reasons not to buy this book:1. The earnings potential in this book are very unrealistic. It seems as if you can be rich with almost no work.2. Some of the business concepts are absurd(i.e. a service that uses dogs to chase ducks away from your property)3. The author does not have your success in mind, he just wants to sell you his books and newsletters.