I really like to do drawings that are so quick you almost don't have time to generate any anxiety. It is as though you can't be held accountable for failure because you didn't really have time to complete the drawing!
I have made it no secret that I have an ongoing obsession with the drawings and paintings of Picasso. Recently I have fixated on his continuous line drawings. (See a couple of examples below.)
In my opinion this is the best part of the drawing. It is loose and allows the line to show both differences and similarities between the two feet.
When I look at the linear qualities in isolation this way, I can even imagine the drawing becoming the basis for a large, graphic, abstracted image. Or it could take on a life of its own as a landscape.
I don't know about other artists, but this is the way my creative mind works. I am constantly looking, or should I more accurately say actively viewing, dissecting, combining, everything around me. Everything from magazines to faces to abstract concepts, to form new threads which I can perhaps follow down the path to something new.