I wonder how much residual resistance remains from our caretakers telling us to sit still when we were kids. The directive was an imperative that had punitive consequences if not heeded.
When we try “to sit still”, is part of the restlessness rooted in this formative experience of admonishment? Remember the challenge of trying to harness all that chaotic energy flooding through you?
You'd sit on your hands, or hold your breath. Whatever you could do to stay out of the corner. Facing the blank wall in silence. Sound familiar? There is a Zen practice of sitting facing the wall for meditation. How much of our resistance comes from this fight againt “time out”?
Be here now. It isn't Mom telling you to sit still, to calm down, or you are going to your room. It isn't the teacher telling you to settle down or go to time out. Now it's your spirit inviting you to come home and sit for a spell.
I'd be curious to hear if you have come across this in your practice.