David Foster

I am uncompromising to the point of huge dissension in the studio. And it's served me very well. My theory and my philosophy is, 'Compromise breeds mediocrity.' Obviously, you have to pick your battles, and the more success an artist has, the more they want to be involved in their own career, which is not necessarily a good thing.

I'm probably wouldn't do anything differently if I had to do it again. Every little thing that happens to you, good and bad, becomes a little piece of the puzzle of who you become. Every successful person you read about - Warren Buffett, Bill Gates - they all say pretty much the same thing. 'Do what you love.' I know I did.

The craziest thing I've done is cut my hair blonde and short a couple of years ago. And people reached out to me saying, 'Celine, you're one of the most stable things we have in our lives, don't do that. We want you the way you are.'