When I was in school, I always made a wish on a mail van. I would cross my fingers and not say a word till I saw a black car. It took many years of futile wishing to realise that the Barbie house wasn't going to be wished into my life, I would have to take more concrete steps. Then came the age of wishing as I crossed a subway while a train passed above. And more recently, my final hope and futile wish at Chishti Dargah in Fatehpur Sikri.
Taking the 3 decades of my life as an indicative sample (if Freud can do it, so can I), I think I can safely say that superstitions are just that - superstitions. Blind faith. Wishes don't come true by wishing them. You have to make them happen. If problems were solved by wearing stones, Obama wouldn't have any bare fingers left now, would he?!