I’m not quite sure what this book is trying to be. It straddles the line between personal finance and pop psychology, but each one gets in the way of the other. The “psychology” side of equation contains things like “everyone’s choices make sense in their own mind,” “people vastly underestimate the role of luck and risk,” and “people are terrible at predicting both future events and their own happiness.” So, pretty basic stuff. The “money” side of the equation are also pretty basic to anyone who’s read literally any personal finance book: “compounding works best if you have a very long time to invest,” “going into debt to buy stuff won’t make you happy,” and “it’s good to save even if you’re not saving for anything in particular.” Pretty much all the advice is aimed at people who have enough income that they could potentially invest their money. (The author says on multiple occasions that “past a certain level of income, your ability to save is directly related to how much you can keep your ego in check.” But “past a certain level of income” is doing a lot of heavy lifting here.) Ultimately, the most useful piece of advice is, I think, to know what outcomes you, personally, want, and to ignore any so-called experts who are playing a different game than you. But in this end, this book is essentially The Millionaire Next Door with window dressing.