There were a couple of years where I got a bit lost - I went out too much, I was a bit heartbroken, thought I was a bit more of a dude than I really was. I would love to go back and have a strong word with myself.

Sometimes you can have a reputation for not being relatable and nice because you had a bad day once. That's the thing. You know, I think that's particularly pertinent with Justin [Bieber] because, like, you just forget how young he is.

You want to see the joy in people, and you want to see the person that always dreamt of being a star, you know? You want to see people having a great time. So Mariah Carey is a huge fan of George Michael.

It was a chance meeting with a lady at Mariah Carey's record company who was here in our office, actually. And I pulled her in here to this very office that we're sitting in now, and I played her the clip of me and George Michael singing. And I was like, it's joyful. And that's what people want.

There's nothing more creative I'll ever do in my career than trying to make an hour of TV everyday.

If our show [Carpool Karaoke] shines, then I shine. I don't ever want to come out and make anything about me. I want to make it about them, make them the best that they can be. And the whole thing is a collaboration, those carpools.

It would be really arrogant of us to not have any of the fears.