Carswell's Guide to Being Lucky is a novella in The Lunar Chronicles
by Marissa Meyer. It takes place in Los Angeles in the American Republic, seven years before Cinder. It was released on February 4, 2014, in exclusive copies of Cress and can be found by subscribing to Marissa Meyer's newsletter.
Summary[]
A short story detailing the incident referenced by Carswell Thorne (at thirteen years) between himself, Kate Fallow and the great retrieval of her portscreen. We're able to catch a glimpse of a young Carswell Thorne, his family life and teenage years.