If I can just stay relaxed -- I really feel like I can do it, but, you know, I'm sometimes my own worst enemy.

CNN: SHARE THIS

I'd like to say to people look, I'll do it as long as I have the energy to do it and when I don't feel I can put as much into it as you like, then I would want to step down.

BBC: Breakfast with Frost

"After a while, when you sing along to something until you feel like you can sort of go unnoticed after a while, I guess it's an amalgamation of all those voices, " she says.

NPR: Sia Learns to Sound Like Herself