When I was in high school, I had a Lit teacher who promoted free-writing. We were to bring a composition book with us to class and spend the first ten minutes or so of class writing down anything that came to mind… with no attention to punctuation or capitalization… just write whatever was on your mind. I found this freeing and meditative. The teacher wouldn’t read it, and only checked that we’d done the writing and so it was peaceful and productive.