Nah, I don't believe in those old wives' tales or junk. I do believe karma exists though. Even if it's not some kind of higher power, it still exists to some extent. Bad things happen to everyone, but if you're a bad person, noone's going to be there to pick you up. That's karma for me.
I suppose I also don't disbelieve things like reincarnation, ghosts or aliens. I'm certainly not a firm believer nor do I place much focus or attention to these things, but I don't think they're totally impossible either.