Regarding overcoming his addiction, he says:
“It didn’t happen overnight, and I’m not trying to say it could never happen again,” he says. Purity, he explains, is a daily battle. “It isn’t a destination that you reach and you wake up and think: ‘Oh, look at this, I’m pure.’ As a Christian, purity isn’t the destination; heaven is the destination.”
It's worth reading the whole interview.