The 35-year-old British comedian, who married singer Katy Perry in October, said since getting his life together, he has started worrying about how people see him.
In an interview over lunch with the Los Angeles Times, he explained, 'If I thought they thought we didn't appreciate the food, it would trouble me. Like, if I am rude to someone now - I've developed a conscience. Imagine that?
'It's like a literal Jiminy Cricket in my head going, 'Oh, you shouldn't have done that, that was mean.' It's not just, 'That's the bloke out of [Forgetting Sarah Marshall] and he was rude.' It's more I have this crushing awareness of humanity now.'
He added that in his darkest days he was 'like a lunatic, smashing stuff all the time and self-harming and kicking and screaming and getting arrested'.