I dyed my hair red when I was ten and when I was 11 - in my goth period - I dyed it black and I was really into witchcraft. I made mini shrines in my bedroom with candles and tried to cast spells to make the boy in the next class fall in love with me. I don't think he did.

When you're heartbroken, you're at your most creative - you have to channel all your energies into something else to not think about it. Contentment is a creativity killer, but don't worry - I'm very capable of making myself discontented.

Everything has such order and everyone is so focused on doing what they're doing that no one ever pays attention to you spinning and dancing around supermarkets. It's something you find in places like supermarkets and airports, where everything is really ordered. There's something about those places that makes you feel really anonymous.

I try to write lyrics so that they won't age, which sort of leaves you with the big subjects like death and love and sex and violence.

Bono told me how to dance in high heels and he also told me about U2's Glastonbury performance and how everything that could have possibly gone wrong went wrong, including him ripping his trousers on stage. I think he was lunging and his trousers ripped! He was telling me how he had to find a new way of performing that didn't involve moving.

I've been having this really weird anxiety dream about arriving too late or too early, and the people in charge are like, 'You have to leave! You have to go back to the hotel and get ready!' And I use the wrong exit, and I'm running down the red carpet in ­pyjamas, like, 'No! Don't look at me!'

I love that sense of release as you throw yourself into the crowd as hundreds of arms are carrying you.