Given the task definition and input, reply with output. Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

I'm happy I borrowed this from a friend who didn't have to fork out the $35 for it. If it had been an $25, or maybe $25 as some of these other reviewers are, then yeah...it's well worth it, but that's not how you sell things. The entire book is just another sales pitch with no real substance. And if he does say something original about being happy, I'd like my $5 back and stop wasting it on this. A very average self-help book.
Bad review