Since I work on the Internet, where every other post is about "creating wealth" and "overcoming your money blocks," this book was really refreshing. It's well-written and easy to read. The author manages to avoid seeming self-righteous; he focuses on what he did and even admits that, at times, he was a little too concerned with following his own rules. I especially liked the parts where he talks about finding genuine joy in what he was doing: eating delicious food, hiking and having time to think.
The obvious challenge is, we can't all do this. Someone has to write and publish the books. Some of us are simply less talented than others. Our modern life is set up for car travel, even if you hitch hike or get rides with friends.
Additionally, if we buy fewer products and services, we are displacing ordinary people from jobs. The only way to make this work on a large scale is to establish communities, as he discusses.
On the other hand, we can simplify our lives. I stopped watching television a long time ago (although I did go to a sports bar to watch the WNBA finals this year).
I don't drive a car, but to make this option feasible I live in a big city with a lot of other things that create a big carbon footprint.
Ultimately the book makes a powerful statement that's quite memorable. The author's matter-of-fact British style helps a lot. It will be interesting to see what he does next and whether the book can make a difference beyond a book and a few feature stories.