Some evenings it is good just to sit and sketch or doodle. I like to just noodle around with a pencil and without trying to plan a new painting. If we get too locked tight, always producing, producing, producing, it is easy to forget to relax and just play.
Drawing is just plain fun so drawing without a plan is a good way to relax. It loosens the hand and mind. Sometimes I find things I want to pursue further, but mostly this is just a way to relax.