Mike Tyson: "I won't survive if I don't get help"

Former heavy weight boxing champ Mike Tyson is opening up about his battle to stay sober.

"I won't survive if I don't get help," Tyson said.

He turned a promotional press conference last week into a confessional - admitting that he's a "vicious alcoholic".

Tyson spoke to NBC's "The Today Show" about his ongoing struggle with substance abuse, saying he won't survive if he doesn't get help.

"When I start drinking and I relapse, I think of dying. When I'm in a real dark mood, I think of dying. And I don't want to be around no more, sometimes I don't want to live when I'm in that state. Tyson continued, "it's a real challenge because I don't know if I like this sober guy, it's hard for me to live normal, straight is hard.

Outfront: Dr. Drew Pinksy, host of HLN's Dr. Drew on Call.