I've been fascinated with happiness in the last five years, so it seems obvious that this book, now considered a classic in the field, would be a book I should read. And now that I have, I must say that I agree with the crown that has been placed upon this book's head; it's a worthy read for anyone interested in happiness. I took away from it a paradoxical and disquieting idea: the happiest people are the most optimistic, but fail again and again to see the dark truths in life, while the unhappiest people are able to see and act on the grimmer life truths yet suffer deeply from the sadnesses that looking at reality brings. What do you do with that?Seligman encourages us to use optimism in most everyday situations, to keep us buoyed up, to face the daily difficulties of life, but to weigh in with realism in situations that could endanger our physical existences.I have heard that Seligman has a new edition of this book (this is a library book, copyright 1991) which I probably need to seek out. I am also interested in reading his book entitled Flourish.