Research is increasingly showing that there are several kinds of depression. One of those kinds is anhedonia--the inability to feel pleasure. In this book, Dr. Hart examines modern anhedonia, positing that it is at epidemic proportions. Today, anhedonia is paradoxically a result of too much pleasure. That is, our society has available so many tools that give us a temporary rush of pleasure (dopamine)--from smart phones to video games to food to porn--that we overload our pleasure feedback loop to the point that we have a harder time feeling pleasure and need more of it to get the same sensation. Things need to be increasingly more novel or more stimulating or more excessive. If this sounds a lot like addiction, that's basically what Dr. Hart says is going on when we say, check our email for the 50th time in one day. Eventually our ability to feel pleasure is corrupted or depleted. This book may explain why modern folks have trouble sitting still, enjoying a sunset, engaging with people, and in general doing things that do not provide immediate gratification. It all rang very true to me. The author infuses his religious background in a way that I did not find moralistic. In fact, it makes sense that religion would be an outlet for those who are looking for meaning beyond the kind of pleasure-seeking that much of American secular society (entertainment, advertising, consumer culture) promotes.
Like some psych books I read, this one could have benefitted from more research and description of what this anhedonia-stricken society looks like. What are Americans doing that is causing this epidemic of anhedonia? Sometimes these ideas can get abstract or not relatable if we aren't given real life stories beyond just the case studies of the doctor's patients. Still, a very useful fundamental insight that I think could help a lot of people.