Then you suffer from
Nobody is quite sure – for sure – where this superstition comes from, many theories!
A Norse myth about twelve gods who had a dinner at Valhalla—?
….or whatever reason, among many cultures, the number twelve emerged throughout history as a “complete” number! So 13 is not? Lots of these superstitions about 12 or rather 13 refer to Biblical times.
As for Friday the standard day for crucifixions in Rome… etc.
All of this is psychological mumbo jumbo!
So break a leg and look over your shoulder….