Instruct: Classify the given review as either positive or negative.
Query: A Miracle

My baby wasn't colicky, but I wanted him to sleep through the night (so I could too). Not only are the techniques helpful and easy, but the theory behind it is very interesting. Sure enough, my baby slept through the night and was sleeping 11 hours straight not long after. What a godsend. I will buy this and a "miracle blanket" for all baby showers.