Instruct: Classify Amazon reviews into positive or negative sentiment
Query: There are many great management books in the world...

...but this isn't one of them.If you want to send your business down the drain, then read this book.If you want all your staff to quit or go 'postal' because you treat them like garbage and allow people to abuse them, then read this book.If you have no idea that what it takes to run a successful business is hard work and not inane aphorisms, then read this book.If, on the other hand, you want to run a successful business, then buy something else and avoid insipid tripe like this.