There are many ways one can avoid bad luck. You should always knock on wood, if you spill salt, throw it over your shoulder, and avoid ladders and black cats at all costs. You are also better off staying at home on Friday the 13th and while you’re there, do not open an umbrella, put shoes on a table, or go near any mirrors in the house. According to lore, that, plus a lucky penny and an evil eye amulet, should save you from any misfortune.