This book sets out in sufficient detail the Christian-Orthodox, previously secret, known only in monastic traditions, teaching about intelligent negative energy structures (entities) constantly acting on every person. And although the work is mostly based on old Russian texts, on the spiritual experience of generations of Christian mystics of the distant past, it describes, through the prism of ancient knowledge, a view of the designated problem, tied to the life of our contemporary, especially the so-called “spiritual seeker.” This confirms that the phenomenal discoveries of Orthodox saints and elders in this area about the nature of consciousness are still relevant today. Certain, invisibly operating processes have been carried out for centuries according to the same patterns, laws and principles - learn about them, this is very important for every person!