Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Could be helpful in certain situations.

We bought this book because the reviews called it "essential" but we found it to be useless when we tried to put its ideas into practice. The authors do detail problems and offer solutions but their advice is actually quite vague. We bought the book to try to get some help but following the advice in the book just made us frustrated. They don't have suggestions for people like us, whose discipline issues aren't as pat as those in the book. For parents who are starting out, this might be a helpful book to read but for us, whose problems are more established, the book really wasn't any help at all.