What are some other superstitions that people may have?

Some common superstitions include the belief that breaking a mirror brings seven years of bad luck, that finding a four-leaf clover brings good fortune, and that walking under a ladder is unlucky. Many people also avoid the number 13, considering it to be a sign of misfortune, and some believe that carrying a rabbit's foot can bring good luck. Additionally, it is often thought that spilling salt requires throwing a pinch over one's left shoulder to ward off bad luck.