Justin Bieber wanted his second album to be as personal as possible.

The 18-year-old singer has just released his second LP Believe and says when he was writing it he wanted to focus on all the good and bad things that have happened to him, including Mariah Yeater claiming he had fathered her child: "I'm always inspired by different things that I've gone through. Over the past couple of years, there are things I want to talk about - even with Mariah claiming that she had my baby. I wanted to be able to talk about that with my album."

Justin also revealed how he finds it easier to write songs after dark as he feels he is much more focused after dark. "The nighttime is usually the best time for creativity, because my mind wanders, and I'm able to focus more."

While he was inspired by the allegations, Justin recently admitted Mariah's paternity suit last year almost made him quit the music business: "At the beginning of it all I was in Florida, away from my friends and family and I was pretty sad. I got to the point where I thought, 'I don't want to do this. I just want to be normal'. It was difficult because I'd never gone through anything like that."