Deborah Boardman visited our Art as a Spiritual Practice class, with ideas about her rituals, practices and themes in creating work. She mentioned that when in doubt or uncomfortable with what she is doing, she likes to sweep her floor, for long periods. Sweeping is task oriented and gets her out of her knots.
This is akin to what I am achieving with my chalk and more strongly with my sand drawings. It's a way to clear ones mind of distractions leaving space for a meditative attitude in which one can find new inspiration.