I know that having some superstitions do not work but somehow they help to keep someone "sane" while gambling. Or rather they help someone to find "closure" during gambling whether the outcome was a loss or a win.
Mine are choosing to gamble early in the mornings or late in the evening because I believe it will make me win rather than lose. Also clicking fast on the spin button than clicking slow because I also kinda believe that it may make me hit the jackpot. These are the two I can remember for now that I have observed in myself. Maybe there are others but I cannot tell.