I am most creative when I am hungry and by that I don't mean hunger for food. It's a hunger that can't be satiated.
Creativity for me then, is being able to channel what is stirred up inside, to work its' magic outside - never knowing how that will come out or what it will be. Many times it is through writing and other times I put pen and ink to paper or build a painting out of fibers and colors.
Sometimes the process is gentle and I hardly notice. At other times it's like vomiting - almost painful. When I am creative, I am no longer me that everyone knows, but a new self or a very very old entity.