A movie's success depends on its WHY.
WHY was the movie made?
The stronger the why, the bigger the success.
Because you're going to get rejected.
Because many people will refuse to help you, or participate, or think you'll succeed, or answer your e-mail, or watch the movie when it's complete.
If you have a strong enough reason, you will be motivated to finish despite the obstacles.
If you have a strong enough drive, people will irresistibly pay attention.
If you have a strong enough passion, all that matters is that you deliver the message.