I watched an interesting video from Stefan Baumann where he talked about the psychology of sketching. He prefers we call it doodling as it takes the pressure off to produce something good enough to use that pristine white paper that comes in sketchbooks. Doodles can really help you learn to draw and improve your drawing skills. Doodles also imply fun, no pressure or expectations, something that sketching inherently does imply. He also suggests that you do about 100 doodles, (Joan, I think you are the only one in the group that is hitting this stride and then some on a weekly basis) with intent, per week, and every 5 pages you should doodle with your secondary hand. For me I am right-handed, so I have to become a lefty. While those doodles look pretty bad, they too will improve with practice, but it engages your left side of the brain and makes it work instead of just going on auto pilot. He says that if we just doodle our 100 doodles a Week with our main hand that we go off into other thoughts and that won't improve your drawing skills. When you doodle with intent you need to think about it somewhat, even if you are doodling from imagination, so that you can reap the benefits to your drawing skills. You have to make your self work to grow!!
Thanks for taking a look