I am NOT superstitious but we all know that it's been a rough week and just when you start to think that we've made it though the week and we're in the clear, all of a sudden you ask yourself... Is there anything else that could go wrong? Absolutely nothing unless of course you're superstitious and it happens to be Friday the 13th... Surprise! As I mentioned before I'm nor superstitious but I've obviously heard some of the most popular superstitions out there and wondered where they came from or what they meant. nbcnews to the rescue... here are the 13 most popular superstitions and some method to the madness on Friday the 13th. Enjoy ( By the way, I do try and avoid black cats crossing my path... LOL)

13. Beginner's luck

Usually grumbled by an expert who just lost a game to a novice, "beginner's luck" is the idea that newbies are unusually likely to win when they try out a sport, game or activity for the first time.

12. Find a penny, pick it up,,,

And all day long, you'll have good luck. This little ditty may arise because finding money is lucky in and of itself.

11. Don't walk under that ladder!

Frankly, this superstition is pretty practical. Who wants to be responsible for stumbling and knocking a carpenter off his perch?

10. Black cats crossing your path

So why keep a black cat out of your path? Most likely, this superstition arises from old beliefs in witches and their animal familiars, which were often said to take the form of domestic animals like cats.

9. A rabbit's foot will bring you luck

Talismans and amulets are a time-honored way of fending off evil; consider the crosses and garlic that are supposed to keep vampires at bay.

8. Bad luck comes in threes

Remember confirmation bias? The belief that bad luck comes in threes is a classic example

7. Careful with that mirror

According to folklore, breaking a mirror is a surefire way to doom yourself to seven years of bad luck

6. 666

Three sixes in a row give some people the chills. It's a superstition that harks back to the Bible. In the Book of Revelation, 666 is given as the number of the "beast," and is often interpreted as the mark of Satan and a sign of the end times.

5. Knock on wood

The fixation on wood may come from old myths about good spirits in trees or from an association with the Christian cross.

4. Make a wish on a wishbone

The tradition of turkey bone tug-of-war goes back a long way. Legend has it that first-century Romans used to fight over dried wishbones — which they believed were good luck — and would accidentally break them, ushering in the idea that whoever has the largest bit of bone gets their wish.

3. Cross your fingers

Those wishing for luck will often cross one finger over another, a gesture that's said to date back to early Christianity. The story goes that two people used to cross index fingers when making a wish, a symbol of support from a friend to the person making the wish.

2. No umbrellas inside

… And not just because you'll poke someone's eye out. Opening an umbrella indoors is supposed to bring bad luck, though the origins of this belief are murky.

1. Friday the 13th

If you're not scared of Friday the 13th, you should be scared of the word used to describe those who are: friggatriskaidekaphobics. (An alternative, though just as tongue-twisty, word for the fear is "paraskevidekatriaphobia.")

For a superstition, the fear of Friday the 13th seems fairly new, dating back to the late 1800s. Friday has long been considered an unlucky day (according to Christian tradition, Jesus died on a Friday), and 13 has a long history as an unlucky number.