Hearing about doppelgangers (someone who looks like you, a twin stranger) is less creepy than it would have been long ago. There are so many more people on the planet now, it doesn't seem so dramatic to see someone else who looks like you. I've been more creeped out looking at myself in the mirror. No wonder there are so many superstitions about mirrors, photographs and seeing your reflection in a window or a pool of water. Really seeing yourself is a bit weird.
It helps to be doing something and not focused on looking at yourself. We don’t really look at ourselves while using the mirror to put in eye drops, add cosmetics, or shave. It’s when you stop. There is that reflection, it moves when you move, it looks right back at you. Animals get very spooked by seeing themselves in mirrors. I don’t think that’s a coincidence.
Take a real look at yourself in a mirror, or some other reflection. Store windows are good because you can see more than just your face. Seeing your whole self is eerie when you stop and really think about it. At that point, alone, do you dare test some of the old superstitions? Repeating a name in front of a mirror, challenging a ghost, demon or something to appear. Trying to look just over your shoulder, or from the corner or your eye to catch something hidden or lurking there. Could that quiet mirror be some kind of portal to another realm, just waiting for the right person to step closer, reach out and touch it. Why rock that boat. Just check your face, quickly, and move along.