Oh God, so I did Business Economics/Business Law, and a Creative Writing Minor.
There's this 10 - 15 chapters detailing a court case in one of my oldest books and it was only after doing classes on law that I realized that... yeah, none of this makes sense.
As we grow we gain new skills and more knowledge, and I like to see cringing at our old work as a good thing that means we're constantly improving.
Are you an English as a second language speaker? The hardest part for me has been the dialects thing. I've lived in a lot of places---so my accent and English dialect is everywhere. Remembering words as being specific to certain locations is still something I'm trying to teach myself.
Sharing works with strangers is such a nerve-racking thing, but you build up a zeal for it with time!