Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This worked for me

Before I read "Naked at the Podium", I had given a number of presentations of my book. However, after I read it, what a difference! I was more at ease, more confident, and the audience reflected this change. The result: more book sales. No writer setting out to promote a book can afford not to read, and use, this important contribution by Kahle and Workhoven. Evelyn McDaniel Gibb, author of Two Wheels North