**FILE** College football player Herschel Walker poses after being presented with the Heisman Trophy in New York City in this Dec. 4, 1982 file photo. Walker suffers from dissociative identity disorder, formerly known as multiple personality disorder. His experiences are chronicled in his book, "Breaking Free," which is released this week. The 46-year-old Walker was a star running back at Georgia and in the pros. He says he had the condition during his playing days but didn't realize it. He doesn't remember winning the Heisman in 1982 or darker events, such as threatening his then-wife. (AP Photo/Ray Stubblebine)