Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book changed my life, no really.

This is the most important book of my life. When I read it, I was studying biochemistry at university and not at all sure what I was interested in. Once I finished this book, I changed my major to computer science, took up advanced computing mathematics and eventually ended up working as a developer for the next 20 years.Read it. I have never read a more interesting, more proficient, and more supremely deep work. I doubt that I ever will.