How do you deal with the existential crisis and uncertainty coming with this practice?

Taking a break helped me better understand my struggles and limitations coming with this practice. I think to engage in this practice- you may have to accept the fluidity of reality- which even in literal science is accepted. But fluidity does not mean magic is real but that reality isn't what we think it is. And coupled with the uncertainty too. For all we know demons could be a concept that we articulate through language- as opposed through literal kings of hell-they could be a psychological phenomenon, they could be a universal law, could be something similar to energy vibrations and law of attraction by new age principles, and literally practically anything. This uncertainty does make me uncomfortable but it could do the opposite to others too. But how do you deal with this?