All of my walls are covered with framed pictures of my friends.

What I've learned is not to change who you are, because eventually you're going to run out of new things to become.

Throughout all of the changes that have happened in my life, one of the priorities I've had is to never change the way I write songs and the reasons I write songs. I write songs to help me understand life a little more. I write songs to get past things that cause me pain. And I write songs because sometimes life makes more sense to me when it's being sung in a chorus, and when I can write it in a verse.

And you know there’s nothing like writing a song about someone who’s mean to you, and just makes your life miserable…and then winning a Grammy for it.

I never want to end up being a self-centered, vain human being.

When I'm 40 and nobody wants to see me in a sparkly dress anymore, I'll be, like: 'Cool, I'll just go in the studio and write songs for kids.'

Other women who are killing it should motivate you, thrill you, challenge you and inspire you.