Former football star Herschel Walker has written a book revealing his struggles with dissociative identity disorder, formerly known as multiple personality disorder. Walker says the disease was so serious it ruined his marriage and led him to endanger his own life, CNN reports. The 1982 Heisman Trophy winner blames the disorder on childhood trauma from being overweight and stuttering.
"I didn't really learn about this until about 10 years ago," said Walker, adding that he hopes his book can help others avoid his fate. "My life was out of control. I was not happy, I was very sad, I was angry and I didn't understand why." (Read more Herschel Walker stories.)