Pretty good. I like reading biographies. This book would be good for a small discussion group, as it has questions and inspirational sayings at the end of each chapter. The only thing that was dragging it out for me was that, nearer the end, there were more and more direct plot summaries from action movies that Chuck Norris starred in. You'd love that if you're really into action movies, sports, martial arts, etc. I was just more interested in reading about his life and not the plots of his movies.
This is an old book, but the messaging is still clear. This book is written by a champion athlete, turned actor, who has had a go at being a writer. I would suggest that you don't judge it on the writing, but for the lessons it provides from someone who started at the bottom and worked hard to become a world champion. Also my moustache and roundhouse kicks are now way more powerful, sorry, couldn't help myself.