Your bad luck will last probably until you throw a pinch of salt over your left shoulder.
Passing salt was not bad luck. Spilling salt was bad luck because in Roman days, salt was very expensive.
No it is bad luck that is why you have to throw it over you left shoulder to hit the demon in the eyes.
An example of a superstitious belief is that spilling salt is bad luck. It originated because both spilling things and bad luck are fairly ordinary events and it is difficult to disprove the correlation.
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.
Not that long ago, salt was expensive, and of course accidentally wasting something valuable would have been unlucky. Same went for mirrors.
Of course not. It's all superstition. In fact, according to the superstition, throwing salt over your shoulder counteracts other things that bring bad luck supposedly, like breaking a mirror or spilling salt.
North American superstitions include the number 13, especially Friday the thirteenth, spilling salt, seven years bad luck for breaking a mirror, black cats, and not stepping on cracks.
3 examples of bad luck: Breaking a mirror, walking under a ladder, or spilling salt.
left
Throwing salt over the shoulder is a superstition believed to ward off evil spirits or bad luck. It is thought that spilling salt brings bad luck, so throwing it over the shoulder is a way to counteract this belief.
Lots of superstitious people, when they spill salt, will take a pinch of it in their right hand and throw it backwards over their left shoulder. Superstition has it that, at all times, a devil waits over your left shoulder, and also that spilling salt is bad luck (perhaps because it used to be rare and precious). Hence, you can mitigate your bad luck by throwing salt into the eyes of the devil. There's also a belief that your guardian angel (who can be found over your right shoulder) spills salt to warn you of evil nearby. Either you throw the salt to hurt the devil or, as salt was valuable, as an offering to placate him. Like lots of other superstitions in a Christianized culture, it has a Christianized explanation: spilling salt is bad luck, because Judas spilled salt at the Last Supper. This is somewhat equivalent to the Christianized explanation for not sitting down thirteen at the table, and almost certainly a red herring.
The left. It is said the devil sits over your left shoulder, spilling salt is supposed to bring bad luck upon yourself, and trowing the salt over your left shoulder therefore "blinding" the devil so he doesn't know who to bring the bad luck on.