David Sheff is the author of Beautiful Boy: A Father’s Journey Through His Son’s Addiction, a number-one New York Times bestseller. A feature film adaptation of “Beautiful Boy,” produced by Amazon Studios and Plan B Entertainment and starring Steve Carell and Timothee Chalamet, was released in the U.S. in October 2018 and internationally in February 2019. David followed Beautiful Boy with Clean: Overcoming Addiction and Ending America’s Greatest Tragedy, also a New York Times bestseller. Clean was the result of the years David spent investigating the disease of addiction and America’s drug problem, which he sees as the greatest public health challenge of our time. In 2009, David was named to the Time 100, Time Magazine’s list of the World’s Most Influential People. For more information about David, see his website at https://www.davidsheff.com/about/.