Guilleabeau is a world traveler who has been to every country in the world. He's also a pretty good writer, and this, his third book, is his best to date.
I think a lot of people are happy to live routine lives; maybe some in that category would still be inspired if they read this book. I'm sure many people happy with their routines would not be inspired, because hey... thinking that you can have a non-routine life, if you really wanted it, is kind of threatening to some people.
Anyway, Guilleabeau is quite clear: If you want to go on a "quest" in your life, the only limitation to what you can accomplish if your own imagination.
Some people just aren't that imaginative. Their loss.
If you are the imaginative type, and if you're willing to make sacrifices to live your dreams, read this book. It will help you focus/refocus on what you need to be doing with your life.