I used to think I had no creative bone in my body. Despite being a mostly straight-A student in grade school, I had to go to remedial art class in grade 3, because I was failing art class.
I could never figure out any kind of musical instrument and was too shy for drama class. There were no creative skills that I had ever had success with!
So I had subscribed to the idea that I was not creative at all. And in fact, might be the reason I succumbed to calling myself an accountant.