Just as the universe is full of many opposites could there be one in your mirror as well? As there is hot and cold opposites that surround our universe wherever one would look, smell, taste or feel so is it impossible to think that your mirror is cracked as well. Maybe there is a living soul who did the complete opposite of what you did and ended up in an entirely different spot or even keeps your seat warm now? If there are many versions of Y-O-U in different sphere’s existing could one live an entirely different existence there? If so would you trade places with them if just for the moment or continue to exist in the mirror you stare at everyday?
FOOTNOTE- I must say this theory didn’t come from my neurons but was passed on by “The Amelia Project” episode one which as you can read was mind explosive.