The U Smile singer is hoping his new 3D flick sends out positive messages to his fans.
Bieber, 16, told MTV News at a book signing over the weekend: 'I want to let people know there's a lot of people that are discouraging in life and that will tell you that you can't do something, but you just got to remember that the sky's the limit.'
He added: '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 newly released trailer for the film shows behind-the-scenes footage and interviews with important people in the pop star's life, including his mentor Usher.