Who are some of the Celebrities who use Scientology and Dianetics to help them live happy and successful lives?
Jake with Avril Lavigne on MTV TRL
Jake Gyllenhaal appears on stage with Avril Lavigne during MTV's Total Request Live at the MTV Times Square Studios May 25, 2004 in New York City. (Photo by Scott Gries/Getty Images)
Jake Gyllenhaal appears on stage with Avril Lavigne during MTV's Total Request Live at the MTV Times Square Studios May 25, 2004 in New York City.