Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not bad, but fairly light

This is a good book to read if you need reassurance that you are not alone. Anyone suffering from depression knows that pervasive feeling all to well and this book fits that niche nicely. However, if you are looking for help on how to recover, there are far better books out there offering sound advice most notably "undoing Depression". Again though, this is an important book for people in the stage of depression where they are feeling alone.