Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Heart Breaking

I can honestly say that my heart felt like it was breaking as I read details about this book. Everything I have heard about this book goes against natural parenting instincts when caring for a newborn. My own daughter is nine months old now, and began sleeping through the night around 5 or 6 weeks old (7-8 hours straight), and we co-slept and fed on demand. Babies cry because they NEED something. Please please don't ever think that leaving a baby to cry is an okay thing. It's Not. Ever.