Instruct: Classify Amazon reviews into positive or negative sentiment
Query: learned optimism

I found the book to be difficult to read and comprehend (and I am fairly intelligent person). There is all kind of unnecessary detail about various psychology philosophies, stories about other psychologists nothing to do with the subject at hand, lots of anecdotes which again have nothing to do with the subject. There are self testing questionaires for "pessimism" which are useful. There is too much info described too bluntly for "self diagnosis" of severe depression and other personality traits which would, in my opinion, put an already depressed person into deeper depression rather than inspire him to seek help (I am not a psychologist but I am an MD). The section that actually deals with changing pessimism to optimism is only about 50 pages out of more than 300 page book. The gist of the book can perhaps be summarised in less than 10 pages.I did not find the book to be even readable (but I still read it).