I wish this book had existed and I'd have read it a couple decades ago. It's not that it has a lot of new information about saving or investing I hadn't already heard/read/learned about elsewhere. It's that it gives a person hope that early retirement is really possible and do-able, in that the authors share specifically how they did it--without super high paying jobs or an inheritance or lottery win, etc. Reading this made me feel better about my own possibilities, along the lines of "if they did it, so can I" (well, I can't exactly, what with being about a decade older than the authors when they retired, but I feel confident I won't have to work as long as my parents did). I would have liked to see more details about their spending in retirement.