I've loved my 20s, but I would never repeat them.

I still watch 'Idol,' and it's still the No. 1 show, so obviously I'm not the only one who loves to sit at home and be entertained.

I'm the perfect amount of guarded. I don't reveal too much, and I never reveal who the songs are about. They are real life. People get that. I date a lot of musicians and they do the same thing. People that work with me - who I write about too - they get it. It's my creative outlet, my therapy.

I've got a song on One Direction's album called 'Tell Me A Lie'. It's a really cute song - I love it. I loved that they liked it. They sound really great on it. I already have it - I'm so VIP with my copy on my computer! It does sound really good.

It's amazing to impact people's lives - it's a cool thing to have the spotlight and be able to reassure people, to say, "It's OK to be you."

My whole point is like, well, if I'm the pop star, then it should be whatever I am. There's, you know, room for Katy Perrys and Adeles and Rihannas and Lady Gagas and Ke$has and me and Pinks. I think what's great about all of us is that we represent something different.

I'm a hygiene freak. I'm like obsessive-compulsive when it comes to washing your hands.