As a faithful reader of this author's blog, I was looking forward to digging deeper and learning more from him on a single subject. I have to say I was disappointed to find a series of two or three-page articles, many of which were on the subject of "enough." But they had little relation to each other, and there is no depth to the exploration of how the concept applies to our everyday lives, and the different ways it can be practiced. The book is very short, and took me about 90 minutes to read. In addition, many of the small chapters had little or nothing to do with the main theme, but were just the author's opinion on various subjects. In one of the longer chapters Rhone goes on a strident rant about web apps vs. dedicated apps, having little or nothing to do with "enough" and merely serves as an outlet for his (in my mind, incorrect) opinion on the matter.
So, if you're unfamiliar with Rhone or his blog, just getting acquainted with the concept of living more simply, and prefer book form, this book is worth the short time it takes to read it. If this doesn't describe you, stick to the blog.