People believe in many superstitions. Many football players enter the field with their right foot, as they believe that this will make them successful in the game. Others say she has a pair of lucky panties, and when they wear them everything goes well. Some I believe you have to do a certain kind of thing before something, to be successful. Anyway, the list is huge.
That's different: doing something because it influences your own performance is a placebo, and those are proven to work. Doing something to make something else happen isn't going to work.
In both cases it is either superstition or placebo.
Many football fans wear a certain piece of clothing because they believe that when they wear that piece of clothing, the team wins. And when there isn't one, the team loses. She came to this conclusion through a series of random events, which she believes are related.
Of course, having a placebo that helps stimulate your brain to do something for you is a positive thing.
Someone can create this kind of placebo, by saying "every day I have to buy $100 worth of BTC, otherwise I have to do 100 push-ups of the difference." Does it make sense to me? Maybe not. But to the person who came up with this idea, maybe it does, I don't know.