There is a word in Polish that does not translate easily into English.
Próg. The doorstep. The threshold.
In English, a doorstep is a piece of stone or wood. A practical object. Something you wipe your feet on before you enter. But in the Polish and broader Slavic folk tradition, the próg was something different entirely: a sacred boundary between worlds, requiring careful navigation, carrying specific rules about how it could and could not be crossed.
You did not stand on the próg. You were either in or out. You did not receive news or greet a visitor at the threshold. You stepped fully to one side. Children were not allowed to sit on it, lest they grow up belonging to neither world fully. When a bride left her family home for the last time, her crossing of the próg was marked, witnessed, and held as a moment of genuine passage. When the dead were carried out, there were specific ways the body crossed the threshold to prevent the spirit from lingering at the boundary, caught between two worlds.
The tradition was not being superstitious. It was being precise.
The Threshold as Psychological Reality

There was a moment, just after I submitted my Master’s thesis, when the silence in the room felt louder than the months of work that had led to it. I remember closing the laptop and expecting to feel relief, or pride, or some sense of arrival. Instead, I felt suspended, as if the ground I had been walking on for years had quietly dissolved beneath me. The career I had built in MedTech no longer felt like the place I could return to, but the new path had not yet revealed itself. I was not in the old world anymore, and I was not in the new one either. I was simply standing there, in that strange stillness, realising that the threshold was not ahead of me. I was already on it.
What the Slavic tradition understood structurally, the anthropologist Arnold van Gennep mapped analytically a century later. In his foundational study of rites of passage, van Gennep (1960) identified three phases in any genuine transition: separation from the old world, a sustained liminal period of being between, and incorporation into the new. The Latin root of liminality is limen, meaning threshold. In the liminal phase itself, as van Gennep (1960) observed, the person in transition is “no longer classified” within the social world they have left behind. He borrowed the architecture of the doorstep to describe the architecture of becoming.
Victor Turner (1969) extended this framework, observing that the liminal phase has properties unlike either what precedes or follows it. In the liminal state, normal social structures dissolve. Identity becomes permeable. The person in transition is, as Turner described it, “betwixt and between,” belonging fully to neither the old self nor the new. This is not pathology. It is the necessary condition for genuine transformation.
The tradition knew this. You did not stand on the próg because liminality is not a place to live. The crossing has to be made.
Integration as the Threshold Period
People who have moved through significant non-ordinary state experiences often describe the aftermath using threshold language without knowing they are doing it. They say they cannot go back to who they were before. They say they do not yet know who they are becoming. They say they feel between worlds.
This is not metaphor. It is an accurate description of where they are.
The integration period is the próg. The experience itself was the crossing of the first threshold: the movement from the ordinary world into territory where the rules of ordinary consciousness no longer applied. What happened there happened. It cannot be unhappened. The question now is how to complete the crossing: how to arrive, fully, on the other side.
In my practice, I notice that people who are truly on the threshold speak with a quality of quiet, inward honesty, as if they are listening to something inside them rearranging. When someone is trying to carry the experience back into their old life without crossing, the energy is different: faster, more mental, full of explanations and plans to make sense of what happened rather than letting it change them.
Stanislav Grof, whose cartography of non-ordinary states remains one of the most rigorous maps of this territory, described the transpersonal dimensions of experience as appearing specifically at the boundaries of the biographical self, at the threshold between what is personally known and what lies beyond personal knowing (Grof, 2000). The threshold is not incidental to this work. It is where the most significant material lives.

What the Próg Requires
The folk tradition was not vague about what threshold crossing requires. It requires witnesses. It requires ritual attention. It requires that the crossing be made completely. You do not remain indefinitely at the boundary, belonging to neither world, frozen at the point of change.
In contemporary terms: integration work is the held space in which the crossing completes. Not the experience itself; that is the approach to the threshold. Not the return to ordinary life; that is the arrival on the other side. Integration is the work done at the threshold itself, when what opened cannot be closed and what changed cannot be unchanged.
The tradition also understood that threshold crossings have specific timing. A wedding crossing is not the same as a death crossing. A birth crossing is not the same as a departure crossing. Each threshold has its own quality and its own requirements. In integration work, this translates directly: what a person needs in the weeks immediately following an experience is different from what they need six months later, when the initial intensity has settled but the deeper restructuring is still underway.
What I see again and again is that the real integration work rarely begins in the first days after an experience. At first there is often intensity: excitement, confusion, meaning-making. Then, a few weeks later, something quieter arrives: the moment when the emotional dust settles and the deeper material becomes workable. That gap can feel like standing in a hallway after the door behind you has closed but before the next one has opened. It is usually in that quieter interval that the true work begins.
For Those Shaped by Eastern European Soil

There is something particular about bringing this framework to clients whose lineage runs through Poland, Slovakia, the Czech lands, Ukraine, or broader Eastern Europe. The próg is not an imported concept. It is not borrowed ancestral wisdom from another tradition. It is the specific epistemological inheritance of people from this soil.
When I work with clients of Polish or Slovak heritage who are navigating the aftermath of a significant non-ordinary state experience, the threshold framework often produces a different quality of recognition than purely Western psychological language. Something settles. The experience stops being anomalous, a crisis of meaning the surrounding culture has no framework for, and becomes recognisable. The tradition always knew that some experiences require the threshold to be crossed properly. The tradition always knew that certain encounters happen at the boundary between worlds. The tradition always had people whose work it was to hold that boundary carefully.
What has changed is the form. The function has not changed.
This is not a claim that ancestral folk tradition is equivalent to contemporary integration practice, or that the “znachorka”, the village wise woman whose work often encompassed the rituals of threshold passage, and the integration coach are the same figure. They are not. But they are working the same existential ground, serving the same irreducible human need: skilled presence at the edge of ordinary experience, when what ordinary social life offers is not sufficient to hold what has opened.
Sitting With the Próg
If you are in the aftermath of a significant experience and you recognise the threshold in what I have described here, there is one thing the Slavic tradition would say with particular clarity:
Do not stay here indefinitely.
Not because the threshold is dangerous. Not because what opened needs to be closed. But because the próg is a crossing point, not a residence. What you encountered at the boundary of your ordinary self was real. The work now is to carry it fully into your life, not to return to who you were before, and not to remain forever between.
The crossing is what the experience was pointing toward. Integration is how the crossing completes.
If you recognise yourself at this threshold, my hope is that you feel the quiet dignity of where you are standing. There is a particular courage in allowing what has opened to reshape you, even when the next version of your life has not yet come into view. The próg is not a mistake or a detour. It is part of the architecture of becoming. You do not have to stay here forever, and you do not have to cross alone. But this moment between worlds is already evidence that something in you is choosing a truer life.
References:
- Grof, S. (2000). Psychology of the future: Lessons from modern consciousness research. State University of New York Press.
- Moszyński, K. (1967). Kultura ludowa Słowian [Folk culture of the Slavic peoples] (Vol. 2). Polskie Towarzystwo Ludoznawcze.
- Turner, V. (1969). The ritual process: Structure and anti-structure. Aldine Publishing.
- van Gennep, A. (1960). The rites of passage (M. B. Vizedom & G. L. Caffee, Trans.). University of Chicago Press. (Original work published 1909)
Work With Kat
If you are navigating the threshold period after a significant experience, 1:1 integration coaching provides the held container for that crossing. You can find out more and book directly at the link in bio, or visit psychedelicintegrationcoach.pro/services.
