I feel like sometimes I'm so positive and sometimes I think the worst of everything or I think the worst is going to happen. It's how I deal with stuff day-to-day, it's just how I get by really, and it's probably not the best way to be.

I've watched and learnt from DJs and remixers and paid way more attention to how I want my voice to sound. Before, as long as it was loud and in tune it was fine. I've discovered the difference made by various microphones and effects, so each track has a different vocal sound, my voice is woven into everything and it's above everything.

My favourite people to follow on Twitter are... my fans. They make me laugh so much and keep me smiling.

I got approached by SoBe a few months ago about being an ambassador and I learned about the previous ones including Naomi Campbell, so I was instantly interested! Then I tried and really liked it. It's different and has interesting flavours... we don't have anything like it in the U.K.

Fame doesn't make it hard to date, because I could be seeing someone now and no-one would know. But if you go out with someone who's in the public eye you're asking for trouble. It's double intensity, double scrutiny. Even if I just went on one date with a normal guy, word gets around and that freaks me out. I don't like all that gossipy stuff.

I guess I'm just quite observant and I pay attention to a lot of things. Human behavior really fascinates me.

Stuff just comes out all the time, sometimes when I sing live it really comes alive and I sort of... I write songs and then almost... not forget about it, but live it really comes out and I suddenly realise what I've written. I don't know where it all comes from.