Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not very helpful

I bought this book two years ago and still have not finished the reading. The way this book is written is so boring. Other books I bought are much more helpful and insightful, such as 'How to Talk So Kids Will Listen...' and '1-2-3'. I reread both books twice since I bought them. You could really try the skills in those books and see the results. But I am not sure I could apply anything I read so far with this book.