Justin Bieber hopes his upcoming movie will "inspire" people to realise "the sky's the limit".

The 16-year-old singer - who releases his first movie 'Justin Bieber: Never Say Never' worldwide next year - thinks the film will help young people to realise there are no limits in life and they can achieve whatever they want.

He told MTV News: "I want to let people know there's a lot of people that are discouraging in life and that will tell you you can't do something, but you just got to remember that the sky's the limit.

"You're able to do whatever you set your mind to as long as you remember to keep God first and stay grounded. So I think the movie really explains that, and it's really inspiring."

The film's director Jon Chu has previously revealed 'Never Say Never' - which features a cameo by Miley Cyrus - will feature an exchange between Justin's life and his music.

He said: "It's really an interesting sort of pass between his real life to his music, so I think in the trailer, we break it down every step of the way in his life. Everyone said, 'It's not possible,' "

"Every step, everyone's always said, 'No, no, no, no.' And he's always said, 'Yes, yes, yes.' And that sort of 'never say never' idea is conveyed in the trailer."