In his first public comments since admitting last week that he has been lying about being sober, Mike Tyson opened up to NBC’s “Today” show Thursday about his ongoing struggle with substance abuse. "I won't survive if I don't get help," the former heavyweight champ told "Today's" Matt Lauer in an exclusive interview. He said he has been sober for 12 days, but that he’s been “mean and irritable” in that time. "It's a real challenge because...I don't know if I like this sober guy," Tyson said. "It's hard for me to live normal. Straight is hard. Livin' straight life is hard." Tyson revealed his battle with addiction and admitted to having suicidal thoughts at a candid press conference on Aug. 23. “I'm on the verge of dying because I'm a vicious alcoholic," he said then. "I've been lying to everybody else that thinks I was sober, but I'm not." Tyson told reporters he had recently gone to an Alcoholics Anonymous meeting because of anxiety over an anticipated meeting with his former trainer, Teddy Atlas, with whom he had a falling out 31 years ago.