Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Playing poker with a straight head

Pretty solid book. Helps getting you in the right state of mind when playing poker. I believe this is crucial to your game and have enjoyed the book. Easy to read and a good flow to it. Definitely feel like its improved my game and would recommend it. Just to give you a comparison I have read the following and thought they were solid poker books as well: Super System, Harrington on Hold'em, Phil Gordon's little green book, Caro's Book of Tells, and In the Money Strategies for winning texas Hold'em cash games. I have read other poker books but don't think they are worth purchasing.....GOOD LUCK!