In my high school days I would wake up early to do my makeup extra "gothy" and would drape some black lace over my usual garb and pretty much pretend that I was a part of the mysterious power people claimed it had, rather than have the power work against me. It wasn't unlike my naive belief during those days that I was more scary/dangerous/hardcore/etc than any force that could stand against me. "Don't walk in dark alleys in the middle of the night? At age 14? By myself? In a short skirt? Psshh. Any attacker would run and hide the moment they realized who they were dealing with! I got this."
Now-a-days I'm not so fixated on being a part of the negative associated with the day. I much prefer to use the occasion to marvel at the power of expectation. Positive or negative. How we really do get what we think about the most. Think about the things that could go wrong, or even that something entirely unknown will pop up and ruin your day... better bet that is exactly what's going to happen. Expect to indulge your creepy tendencies a bit and have fun doing so, then you're in for a good day.
How any of this explains the one year I was completely oblivious to the fact that it was Friday the 13th and every other thing seemed to go wrong... well, it doesn't. But today? Today is a good day for me.