"Master Your Sleep: Proven Methods Simplified" by Tracey I. Marks is a nonfiction book aimed at helping readers improve their sleep patterns. Published by Bascom Hill Publishing Group in 2011, the paperback book covers various proven methods for achieving better sleep. The book, with a total of 161 pages, offers practical advice and tips for improving sleep quality and quantity and is targeted towards individuals looking to address and improve overall health and well-being.