I really don't believe in superstitions. Years ago a black kitten came to my parent's house when they weren't doing to well financially. He walked right into the house when my mother opened the front door between the legs of their Great Dane, hissed at the dog, and made himself at home. They had him for over fifteen years and soon after they adopted him their financial situation improved dramatically.
Eleven years ago when I moved to Ft. Worth I broke an antique mirror of my great aunt's, and I had to throw it away. Instead of seven years bad luck I soon got a job making more money than I'd ever made in my life, and that job lasted exactly seven years.
So I walk under ladders deliberately, wait for black cats to cross my path, and consider anything that most people think as bad luck as good luck for me!