https://jagjotsingh.com/feeling-of-loneliness-during-spiritual-awakening/

this isn't about religion or superstition, because the concept is also found in philosophy.

but Hinduism and Buddhism have it codified in scripture, in a way that isn't strictly attached to a single belief system.

it's a process that a human brain is capable of undergoing. teaching and encouragement can accelerate it but it can also happen by accident.