If you are the suspicious type and believe in superstition, you may be afraid. This year there are three Fridays that fall on the 13th of the month. The number three is very significant because it signifies a completeness. One example is an algebra. You add a small number three in the top right-hand corner to make a cube. A cube is perfect and equal on all six sides.
Either good fortune or calamity is identified depending on the sign and its interpretation of many superstitions. A few common superstitions here in the Western world could be walking underneath a ladder to bring calamity or bad luck, having a black cat cross your path, spilling salt or opening up an umbrella in a building. All of it could spell doom for you.
My favorite is breaking a mirror. This one supposedly gets you bad luck for seven years. I wonder who keeps track of those 7 years?! I also wonder if you break more than one mirror, can you serve concurrent sentences? The fact is a superstition is based on ignorance and fear of the unknown. It is that type of ignorance or lack of knowledge that feeds into our fears. So, superstition is not a phobia. Instead, superstition causes us to have anxiety/phobias if we put belief in it.