Diary of a Wimpy Kid: Hard Luck is a children's novel written by Jeff Kinney and the eighth book in the Diary of a Wimpy Kid series. It was released on November 5, 2013. In this book, Greg's best friend Rowley ditches him, and Greg struggles to make new friends. On Easter, he finds a Magic 8 Ball and attempts to change his luck by using it to make decisions for him and cheat at school. Hard Luck received generally positive reviews from critics and was the bestselling book of 2013. Source: Wikipedia (en)