London, Jan 5 (IANS) Teen sensation Justin Bieber suffers from insomnia and feels he thinks a lot. But he also believes that it could be a sign he is a good musician.

"I'm crazy, I'm nuts. Just the way my brain works. I'm not normal. I think differently - my mind is always racing. I'm just...nuts. But I think the best musicians probably are," Bieber has been quoted as saying by contactmusic.com.

"I just turn over all night and think. My mind races. I think about all the things I didn't have time to think about during the day - like family and god and things that should be more important but you don't have time to think about, because you just get caught up in everything else during the day," he added.

The 16-year-old enjoys fame, but says he realises his responsibility towards his fans.

"It's hard to really balance myself. A regular kid, if he catches the flu, he just gets to go home. But I can't do that. Everything is important. But, you know, my sanity is important, too. Even if I'm angry, I'll just put a smile on my face and fake it. I don't often fake it - what's me is me. I know I have to give up a lot of myself, or a lot of a private life."