Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Improve quality of life by developing a steady mind

This book is a good, informative read for people seeking some inner peace and stability in life. Mr. Okawa's practical advice on what kind of mental attitude and personality we should strive to develop, and some suggestions on how to develop this kind of thinking are invaluable. This is not some esoteric Buddhist text but rather simple common sense for a better quality of life. Highly practical and effective, I would recommend it to anyone.