I'm in almost total agreement with Matthew about it. It is, in its own way, a very raw and emotionally honest book, and all the more affecting for that, but that's not to say that Wilkinson's writing isn't considered and absolutely sure-footed throughout.
Anyway, I'll post my own review when I finally get round to finishing it, but in the meantime, do yourself two favours. Read Matthew's review, and buy Ben's book.