The author shows us clearly how we create unhappiness in our lives, and even better, shows us how to change the habitual way we see the world, and ourselves within it, to bring the happiness back.

A highly recommended read.

For what it is worth, my advise to anyone reading this type of book is to read carefully, ensuring each word and sentence is absorbed and understood, if need be go back and read a sentence again and again until it 'sinks in'.
Because, if you are like me when you are reading, you can end up skating over entire pages, which you have read but not absorbed, ultimately missing the point, which would be a shame for this truely enlightening book.