Most for sure is influenced by luck factor, there's nothing to do with your gambling or your switching between coins that you'll going to use, I agree that it's another part of superstitions believe.
If you are suffering from losing streak and you don't see any changes with your activities, instead of switching, why not stop for a while and park yourself out from the gambling house.
It will help you generate clear mindsets and not to aggressively tried to win back those losses. Also, it will lessen your chance to lose more and give you some good time to plan for another set of strategy to use.