Instruct: Classify an Amazon review into positive or negative sentiment.
Query: should have read this book 5 yrs ago

I just assumed my 4 children were poor sleepers and I just sacrificed my sleep for them and to comfort them as much as I could. A friend suggested this book and I now believe my children could have been good sleepers. We, my youngest, my husband and I, have gained so much from reading this book. Thank You