Instruct: Classify a given review into positive or negative sentiment.
Query: **Update**

I wrote a review of this book 7 years ago when my son was 12 weeks old (scroll down -- July, 1998). He is now a happy, well-adjusted 7 year-old who gets plenty of sleep every night. He has always had excellent sleep habits, including very few nightmares. We used this book faithfully for years since it spans from newborn to age 5, the few times we needed it. I attribute our (and his) success in large part to this book.Buy it and live it, and more importantly, sleep through the night, every night.