Revisit an old thread: I was reminded of this as I deal with motorcyclists who must put the left glove on first, mount from the left side, etc etc. Otherwise they will self combust/run off at the first corner/get a speeding ticket/fail to find a decent coffee shop.
Throughout RN flying training we (nearly) all had our lucky charms, etc. Mine was a set of Dad's wings carried in the left arm pocket of the romper suit. Anyone else remember habits during training, or even now still carry out a set routine?