Inspired by the meditation drawings by Moebius. Seeking a state of mindfullness, forgetting about everyday’s petty issues and letting the hand flow. Same as other skills like road driving, once you have fully internalized the mechanics, while keeping the see-forward ability that allows you to build a composition, the process goes almost automatically. The resulting drawing is less important than the mental state. A healing, nurturing activity that I totally recommend.
You just have to let your hand flow without trying to adhere to any specific thought, form or motive. In my opinion, those formal structures that you have built in your mind after years of conscious practice will arise. The produced drawing, although they are not as important as the process, will look fresher and more vivid.