For me it’s time signatures in music. I grew up playing instruments, played in several orchestras, etc. But no matter how many times someone tries to explain time signatures to me, it makes no sense. I don’t understand why people place such importance on it. To me, notes have a pitch and a duration, maybe some dynamics. That’s it. I don’t understand why people try to needlessly complicate it. It doesn’t give you anything.
My wife will hear a song and go “Oh neat, it’s in 5/8.” And I’m like “How tf do you know that, and why does it matter?”
I’ve seen the books ‘Drawing on the Right Side of the Brain’ by Betty Edwards and ‘The Creative License: Giving Yourself Permission to Be The Artist You Truly Are’ by Danny Gregory being recommended to those who have a hard time learning to draw. The commenter also provided examples of their own drawings before and after, and it was night and day.
However, I looked through the examples a bit, and am wary of reading the books myself, because the drawings there are very representative, while I’m aiming for a more wacky style. It could also be that the books are mainly about drawing from references, not sure yet.