It's not so much lucky as apotropaic. The act of throwing salt over the left shoulder is only done if salt has already been spilled. Salt was supposed to ward off the devil so spilling the salt encouraged his presence. To counteract this one throws salt over their left shoulder, because the left is where the devil comes, and then all is good again.
The superstition of throwing salt over the shoulder dates back to ancient times when salt was believed to ward off evil spirits. By throwing salt behind you, it is thought to blind the spirits and keep them from causing harm. This belief has been passed down through generations as a way to protect oneself from bad luck.
If you have supersticions, you throw salt over your shoulder to get rid of them
over your right shoulder with your left hand
your left shoulder
It is believed the devil stands over your left shoulder and spilling salt is supposed to bring his attention to your "wastefulness" bringing bad luck. If this happens, you are instructed to throw the salt over your LEFT shoulder and "hopefully" into the devil's eyes, thus blinding him to your mistake.
You throw salt on your left shoulder.
over the left shoulder
salt
Throwing salt over your left shoulder is a common superstition believed to help ward off evil spirits or bad luck. This practice is often associated with spilling salt, as salt was historically considered a valuable and protective substance.
It is believed the "devil" stands over the left shoulder of a person. As salt was once considered a symbol of wealth and prosperity, spilling it is thought of as wasteful and a means to tempt the "devil" into taking it from you. Throwing salt over your left shoulder is supposed to "blind the devil" into not seeing the opportunity to reduce your material wealth.
left shoulder
im pretty sure its your right shoulder
Lucky-duck, lucky-ducky, born with a silver spoon in their mouth. Followed by a golden cloud. A lucky star over their shoulder.