When did you get hit by "the tetris effect" AKA playing a video game so much that you get the urge to do moves/actions from the video game in real life?
When I got hooked on Morrowind in middle school it occurred to me to quicksave before a test at school.
Same, but for drawing on paper. It took me a while to break this habit. My left fingers would reflexively twitch, like they were rolling over those key