It has progressed over my life. And at different times its a BIG obsessive problem.
When I was a kid it was with my big toe. I would stare out the window and "jump" over any power pole or tree on the side of the street. Meaning: I press my big toe down until my vision crosses an obstacle and then I "jump" over it.
Then it progressed to tracing power lines with a couple fingers.
Now I do the spelling thing.
DRIVES. ME. CRAZY.
Mix of 3s, thick, coarse, medium porosity
Current hair styling technique: rake with a scrunch at the end. (works with my coarse hair)