For those days when I don't feel motivated to paint, draw, or even move forward with an art project, this quote drives me:
It is never easy to demand the most from ourselves, from our lives, from our work. . .But giving in to the fear of feeling and working to capacity is luxury only the unintentional can afford, and the unintentional are those who do not wish to guide their own destinies.
--Audre Lorde (from her essay, "Uses of the Erotic as Power").