I mean, certainly writing, painting, photography, dance, architecture, there is an aspect of almost every art form that is useful and that merges into film in some way. ↗
The hard part of writing at all is sitting your ass down in a chair and writing it. There's always something better to do, like I've got an interview, sharpening the pencils, trimming the roses. There's always something better to do. Going to a writer's club? ↗
I started writing movie scripts. They excited me a lot, but I didn't like them when they were finished because they were simple copies of the films I saw in childhood. ↗
For that reason you can't write with music playing, and anyone who says he can is either writing badly, or not listening to the music, or lying. You need to hear what you're writing, and for that you need silence. ↗