I can relate! In taking some evaluation tests, it turns out I'm not driven by external expectations -- or internal ones, either. So I can't even tell myself what to do. I've been fortunate to be paid well to be an idea person for my career. But it does get harder, not easier, to stick with some things. I am impressed with your ability to stick with writing something every day, or more.
I like your answer about what you wanted to be when you got older, lol.