It's a good book, but there are some things that I think are big failings in it.

1) it does not have all the rules added up at the end of the book
2) when dealing with work, this book is very, very wrong. Office gossip and politics is not something that can be ignored -- you can choose not to participate, but you should at least be aware of it.

Other that, I liked it, I think it's practical and not "new age".