Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Got the job done!

I had this book on the shelf for quite a while before I suddenly had to use it. I had a convoluted series of unfortunate mechanical events on my motorcycle and could have been hurtbadly, if not killed, and my complaint letter needed to getgood results, financially and otherwise. I read the whole book and followed the advice to a "T", using pieces of various sampleletters. I had a response from this company within 24 hours andthe results I wanted within 10 days. I am grateful to this book.