...for the most part. Skeptical, cynical, etc. But I still believe in luck. Assuming that there is such a thing as randomness in the Universe--that it's not all predetermined by God or some mechanistic chain of causation--then it must be possible that sometimes good things will happen to you and sometimes bad things will happen. And whether these things are truly random or the causes are simply concealed from view, you have no conscious way of influencing them. But you never know. Maybe it does matter what color shirt you wear or what side of the bed you get out on. You might as well try to influence the indifferent chaos of the Universe.
Of course, sometimes it's hard to distinguish superstition from Obsessive-Compulsive Disorder and I've got that, too.