Anchor-to-anchor, 20/20 host Elizabeth Vargas told Good Morning America anchor George Stephanopoulos that she's been struggling with alcoholism and recently completed two stints in rehab. "I am an alcoholic," she said. "It took me a long time to admit that to myself. It took me a long time to admit it to my family, but I am." Vargas disclosed that she's now a member of Alcoholics Anonymous and is hoping to go back to work.