I believe in this weird Polish belief that when somebody wishes you luck you have to refuse it and say "no thanks", because luck has to come spontaneously
I know this is weird but last time I looked at the time at 22:22 and 23:23 my cousin died the next day.
Since then I always try to avoid that. So if I'm looking at the time and it's 22:22 I tried my hardest to avoid 23:23
Probably the supernatural - particularly spirits. I don't believe there is a heaven or hell, but I do believe that people can be trapped on Earth after dying if their soul has unfinished business, or are simply wrathful. I sometimes feel like it may be hypocritical to believe in spirits, but not heaven/hell, but it makes sense to me.