While this book is not a self-help book, it contains a unified framework for the concept of the self. In the process of arguing for his particular view, the author describes numerous experimental studies in psychology that are useful to be aware of. As he argues in one section, just like we are better off learning about the processes undergoing in our digestive system by reading the results of scientific studies involving many people rather than introspecting, we will often gain more insight into the functioning of our psychological makeup by learning about what most people are like.
An set of intriguing studies shows that strangers are as good and sometimes better at knowing about your motives, goals, and satisfaction with life events. There are studies that indicate that people would do well in avoiding introspection in some situations, while some ways of ‘looking within’ are very beneficial. It would be a severe disservice to the book to summarize its contents into a paragraph, so I will abstain.
With reference to happiness, the book has a very helpful chapter which describes several studies from which one can draw self-help lessons. One argument I have not seen in other books was that the highly beneficial mechanism we have to deal with negative events in our lives (by explaining them away with some narrative) cuts both ways: by explaining away the happy occurrences, we undermine our enjoyment of them later on. It seems that savoring good events in life may require refraining from having a story. An important lesson comes from a study where people were asked to write a narrative about some difficult event in life; though expectedly the people were more sad immediately after the exercise, there were long-lasting benefits. A hypothesis is that when a person provides a coherent story describing the events (e.g. death of a loved one), remembrance of the event no longer brings forth many scattered thoughts but instead a cohesive narrative; it is such a narrative that makes dealing with a loss easier. There are also descriptions of several pitfalls people can make when aiming for more happiness in life that can surely be of help to some readers.
People may think that a lot of introspection will bring forth better understanding of one’s desires, feelings, and goals and thus will give a better compass to follow towards achieving more-lasting happiness. This book (amongst others) emphasizes that there are many times when introspection is not a fruitful approach, indeed it may be hurtful. Being wise is knowing when to ‘study’ oneself more, and when to let go; this book can help.
Even if this book is not directly aimed at the topic of happiness, it has a lot of content one can draw valuable self-help lessons from; I highly recommend this book.