It's hard enough to just be a good actor. When you're on set, there's everything going against you. There are walkie talkies going off, the camera is creaking and moving, there are boom mics, and you have to hit your mark and make sure you don't shadow the other person's face. It's a really technical process.
When you have a sense of calling, whether it's to be a musician, soloist, artist, in one of the technical fields, or a plumber, there is something deep and enriching when you realize it isn't just a casual choice, it's a divine calling. It's not limited to vocational Christian service by any means.