In part one of his no-holds-barred interview with Oprah Winfrey, Lance Armstrong admitted to using banned substances to enhance his cycling performance. "You win the Tour de France seven times," Armstrong told Winfrey. "You have a happy marriage. You have children. I mean, it's just this mythic perfect story, and it wasn't true... I'll spend the rest of my life trying to earn back trust and apologize to people." "Oprah and Lance Armstrong: The Worldwide Exclusive" continues January 18 on OWN.