He was a champion on the field. Now he's championing another cause. 

Herschel Walker was in town to talk Tuesday. The former Heisman Trophy winner starred at the University of Georgia, then the USFL and ultimately the NFL.  

But this had nothing to do with scoring touchdowns.  

The 56-year-old still looks like he could still play thanks to an old-school but brutal daily regimen of 3,500 situps and 1,500 pushups. At the Northstar Behavioral Center in Anchorage, he told the audience that his life hasn't always been the charmed existence one would expect for a professional athlete.

"I thought I was going to kill someone," he said. 

Walker had those thoughts a several years ago. 

"Looking at myself, I finally realized there was something wrong." 

He was diagnosed with dissociative identity disorder, which used to be known as multiple personality disorder. He also struggled with depression. 

The problems don't go away on their own.

"We all become ashamed and try to hide them, but hiding problems is not going to solve it, sweeping dirt under the rug only makes a big lump in the rug. Sooner or later you will stumble." 

So he got help. Now he hopes to inspire others to do the same if they're suffering.

"One of the things you look at is backlash from what people think of you, what people feel about you and I didn't care about any of that. I only cared about how I felt about myself and what I may do to someone else," he said. 

He's overcome and feels like a champion again.  

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