Instruct: Classify Amazon reviews into positive or negative sentiment
Query: MUST READ

I was a little skeptical about this book, but when I opened it I couldnt put it down. The beginning wasnt very good but as his theories develop they draw you in. This is the type of book you read over and over. It was a quick read, a very small book with easy to read information. I read it in one sitting. Read this book, it will change your life.