Ferris throws together a wide ranging and somewhat disparate ensemble of topics and offers some interesting insights into them all. Unfortunately he does so with incredible hypocracy. Scoffing at poor science he proceeds to offer anecdotal evidence for many of his claims and adopts a inconsistent approach to referencing.
Each chapter is a small essay on a different topic, and each jumps between narrative, product endorsement, unreferenced fact, and often, some very insightful ideas and jumping-off points on the subject.
As an introduction to the numerous topics, this book represents a great starting point for further research, and goes further than that in many places. More importantly, Ferris recognises the importance of what some teachers call "cues". Not necessarily focusing on telling you the facts, but rather what you need to hear to get results. In my opinion he frequently hits on very effective techniques that work.
Perhaps my biggest issues with the book are that firstly the chapters are hard to follow as serious advice darting as they do between ideas, and secondly often it reads more like the hype and marketing bumf he purports throughout to eschew. It's often less a "how to improve yourself" than a "how to make a lot of money from selling a book to suckers".
I'd give this book more stars for its smattering of insightful gems if only I hadn't been made to feel like a sucker!