I think I've identified as an artist since I was a baby - literally a baby. I made a book of drawings and paintings in pre-school. By the time I got to high school, I was completely enamored with art, doing paintings and portraits at lunchtime. I've been creating in some capacity forever.
The shape that poems make in the mind is an echo of something powerful in the cosmos. I do believe that, and that is certainly irrational, so perhaps I am no wiser than Elizabeth Perkins as to the nature of poetry.