Which superstitions do you still hold, even though you know they are ridiculous and untrue?

I was brought up by my grandparents, and my gran had so many superstitions that it was hard to keep up. As I got older I made a point of ignoring all of them. My gran was part of an absolutely loony spiritualist church and had no formal education after about the age of twelve. She was credulous to the point that she would believe every old wives tale, superstition, or piece of grandmother-friendly propaganda presented to her. If anybody ever tried to discuss her beliefs they were branded as impudent. She never let peer-reviewed science or fact get in the way of what she wanted to believe. One superstition that she had that I haven’t seen mentioned so far in this thread is that of not putting new shoes on a table. According to superstition placing new shoes on a table is considered bad luck. It is believed to invite misfortune, argue with others, or even tempt death. This belief likely originates from Victorian-era hygiene concerns or coal mining traditions, where a deceased worker's boots were placed on a table. It took me years to get over this particular one as it was drilled into me from a young age. Another one that was occasionally annoying was “first footing”. On New Year's Day, it was vital that the first visitor to cross the threshold was a **tall, dark-haired male** carrying coal, bread, or whisky to ensure prosperity. A fair-haired man or a woman was considered a sign of bad luck for the coming year. I was the only dark-haired male in the house, so my gran would often make me stay up past midnight, or would wake me up early on New Years Day to have the “honour” of being first over the threshold. A lot of the other ones I can think of are all mining-related thanks to close proximity to a lot of colliery villages. We had quite a few mining museums nearby and they absolutely hated anybody whistling in the mines when on a tour.