Not at all as I don't place any stock in superstition of that kind (Friday 13th, Mirror breaking, black cat etc). In part, this is because in one culture certain events are seen as bad luck and in others the same events are seen as good luck. Too many real things to worry about in life to give any time and energy to worrying about these types of things. You know that book "Don't sweat the small stuff" I haven't read it but IMO this type of thing would constitute small stuff