Stein has worked as a director, producer and/or writer of documentary films, several of which won awards. In 1991, he co-produced an
Academy Award winning short film,
The Lunch Date. He then co-produced
The Last Party, a film commentating on the 1992 Democratic National Convention. Stein also produced and directed a documentary about his sister's brain surgery, entitled ''When Your Head's Not a Head, It's a Nut''. After films, Stein took up creative writing. At one time, he taught creative writing at
Tacoma School of the Arts. His published works include three books and two plays.
Brother Jones, his first play, was produced in Los Angeles, California in 2005. Garth wrote another play (
No One Calls Me Mutt Anymore, 2010) for the theatrical department at his alma mater, Shorewood High School in Shoreline, WA. Stein's third novel,
The Art of Racing in the Rain (Harper, 2008) became a
New York Times bestseller, a No. 1 BookSense Pick., and winner of a 2009 Pacific Northwest Booksellers Association Award. The novel follows the story of Enzo, a race car-obsessed dog who believes he will be reincarnated as a human. While his owner, race car driver Denny Swift, teaches him about the art of racing, most of Enzo's ideas and knowledge— including the Mongolian legend that a dog who is prepared will be reincarnated in its next life as a human— come from watching television. Stein was inspired to write the book after viewing a documentary on Mongolia called
State of Dogs and after hearing a reading of the
Billy Collins poem "The Revenant," told from a dog's point of view. The racing experience and insights of the novel's protagonist, Enzo, and his owner Denny are based on Stein's own experience racing cars. and left racing after a serious crash — while racing in the rain. ==Personal life==