Oprah Winfrey suffered symptoms of a nervous breakdown last year while struggling to keep her OWN television network afloat while filming "The Butler," the media mogul revealed in an interview airing on Access Hollywood this week. Winfrey, 59, said she came to the realization that she was nearing her breaking point while interviewing Jason Russell last October. Russell, who directed the short documentary "Kony 2012" and spearheaded a social movement to capture the Ugandan warlord Joseph Kony, suffered a nervous breakdown in March 2012 and was diagnosed with "brief reactive psychosis, an acute state brought on by extreme exhaustion, stress,...