Instruct: Classify Amazon reviews into positive or negative sentiment
Query: BUY THIS BOOK NOW AND READ IT IMMEDIATELY!

This is the best book I have read in my life concerning unhealthy child development. The authors clearly understand people like me -- even better than I understand myself!This book has the answers you've been looking for. Why are some people hostile and distrusting? Why are some people angry all the time? Why do some people sabotage their own relationships?The answers are all here. BUY THIS BOOK NOW! It will be the best money you have ever spent.