Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing, and that's the truth.

I had high hopes for this book, but I was greatly disappointed by all of it. The style of writing could most definitely have been improved by a competent editor. The content fell far short of what the title promised. I assure you that most people are aware that if somebody is yelling he is probably mad. This is so oversimplified that it's shocking. What makes matters worse is that the author repeats himself over and over again with the same information -- as though we didn't believe him the first time around. Perhaps he is right... I really don't believe that if a person's feet are pointed toward the door he wants to leave. I think he's just standing that way. So we go from the overstatement of the obvious to ludicrous claims that seem kinda-scientific, but aren't.In essence, I came away from this book having learned nothing. I was so mad I could yell, and now my feet are pointed toward the door. Make of that what you will.Bad book. The end.