>> since then, armstrong has been stripped of his seven tour de france victories, banned from his sport, left his charity, and lost nearly everything. but he hopes comments like these he made on the o.w.n. network -- >> they are my mistake. i'm sorry for that. >> -- might be enough to help restore his reputation. and rewrite his story. >> you win the tour de france seven times. you have a happy marriage. you have children. i mean, it's just this mythic perfect story. >> yes. >> and it wasn't true. >> it's the greatest sports story ever told in many ways. and that's why it's been the most dramatic fall from grace. >> yes or no, did you ever take banned substances to enhance your cycling performance? >> yes. my cocktail, so to speak, was only e.p.o., but not a lot. transfusions and testosterone. >> doping, he told winfrey, was