Personally, I think we're all winging it almost every moment of our lives. Relative to domain experts, I'm bad at almost everything I do. (Cooking, driving, talking, writing, planning, etc). I'm only really good at maybe 2 or 3 things.
I think we're all like this. And its fundamentally ok. Its how human brains are wired.
Sometimes I imagine dividing all my thoughts between things I've personally invented and things I've heard from others. Whats the ratio? I think at least 95% of my thoughts come from other people. Maybe 99%. Maybe more.
Luckily you can build on the ideas of others without being a cargo cultist. Simply verify the sturdiness of the foundation before you go adding an extra wing to the house.