Sean Clinch Stephenson (May 5, 1979 – August 28, 2019) was an American therapist, self-help author and motivational speaker. He was born in Chicago with osteogenesis imperfecta. Stephenson stood three feet tall, had fragile bones, and used a wheelchair. He studied at DePaul University. He earned $15,000 to $30,000 per appearance.
His second book, Get Off Your "But": How to End Self-Sabotage and Stand Up for Yourself, was published in 2009. It was a self-help book about his own personal story along with the stories of others, and provided exercises for readers to perform while they read. That same year, Stephenson was the subject of "Three Foot Giant", a television documentary that aired on The Biography Channel in November 2009.
Stephenson died on August 28, 2019 from problems caused by a concussion at the age of 40.