Set yourself deadlines: The only way to get things done.
If you are serious about making films, this is the one an only thing that will push you through when you're stuck. You know when you are working on your screenplay and you hit a wall or you can't find cash or investors to start your project. Maybe you need money for post. Whatever it is, set yourself a deadline. This will keep you focus and will give you the determination to keep going and move forward.