I change my socks often, because I had bad bouts of athlete's foot fungus infections as a kid. I may be able to change socks less frequently and not get the fungus. But, I'd rather not run the test to determine just how infrequently I could change socks. I don't feel superstitious about it.
I'm a little bit superstitious, and I think that just comes from playing hockey. I won't avoid the number thirteen. A big one for me, though, is walking under a ladder. I've always felt like that's tempting fate. That's just throwing it right in their face. Check me out. I just walked under a ladder. What are you going to do about it?