Discussing his substance misuse, John admitted: “There was a time when I would have told you that I could not fly, sleep, or perform unless I had a Klonopin.”

“I thought I had serious light sensitivity onstage. Spotlights had to be at a super-low grade. The front row had to be lit, because I thought I had a spatial… not vertigo, but something like that,” he went on. “I would have said: ‘It sucks, because I don’t always want to take Klonopin and Xanax, but I have to.’”

John also told the publication about a time that he did so much cocaine while alone in his New York apartment that he feared that he was going to die, but was unable to seek help.

“I left the door to my apartment open,” he shared. “I can’t explain the logic, but I was going to hit the door buzzer and tell the doorman to run and get the paramedics. I think I was worried I wouldn’t be able to dial and explain, and I didn’t want them to have to break the door down. I just sat on the rug and slowly came down.”

“And I thought: ‘OK, this is insane. I’m going to totally slow down,’” John added. “That was like a Tuesday. And Thursday night, I did it again.”