I believe we are all creative. As artist Flora Bowley says, We are all artists. We all can write too if we have the passion for it, but we need to practice and hone our skills.
One of my favourite quotes about creativity is from Madeleine L'Engle. She believes creativity opens us up to revelation. In the act of creativity the artist lets go of the self control which he normally clings to, and is open to riding the wind.
(From Walking on Water and quoted in Riding the Wind.