Ingrained
My next gig is in NY also, so I left most of my stuf there and traveled home with a nearly empty bag. In the kerfuffle at the airport (I got dropped at the wrong terminal), I kept being nagged by the feeling that I was missing or had forgotten something, and then realized that the source of the psychological feeling was simply the lack of usual drag on my fingers as I wheeled the suitcase behind me. Such is the precise nature of ingrained habit.