I just finished shaving my head, and of course I feel wonderful.

It's almost as if my negativity is stored in those hairs — encoded along with where I've been, what I've been eating, and what if any drugs I've been using. I imagine an arcane science devoted to measuring hairs and determining the history of our moods.

Or I could draw a diagram like the water cycle, with arrows going from things like "stress at work" and "messy room" to my eyes and ears, from there to my head, and finally from my head to the trashcan and back into the world.