Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sadly lacking

A most disappointing book. A self absorbed litany of over-privileged adolescents bemoaning their lot. The style and depth of this book is so deeply lacking it is hard to focus on the bleak contents. Clearly some entries were no more that journal reiterations from a bad Monday! Unfortunately devoid of depth or clarity, this book has no redeeming qualities and was not worth the investment, either financial or in time.