I really enjoyed this book. It contains a ton of wisdom, but presents it in a humourous, snappy way. It doesn't come down on you like a ton of bricks or make you feel deeply guilty about your past. What it does do is present each topic in a highly-readable, common-sense way which is easy to read and understand. The cartoons aren't bad either.
It's not the sort of book you read and then put away or give to the Oxfam shop, saying "I've read it". The trick with this book is to keep it handy, and read a couple of pages when you have a cup of tea. If you're feeling down, chances are you'll feel better for a quick butcher's. I vote it a winner.