A ladder, not a leap
A fear hierarchy is a list of situations you avoid, each rated for how much distress it would cause, ordered from mild to severe. It is the map for the whole treatment. Without one, exposure becomes improvisation, and improvisation is how people end up doing the hardest thing first and never coming back.
The rating scale is SUDS — Subjective Units of Distress, 0 to 100. Zero is asleep. One hundred is the worst you can imagine. The numbers are yours; they are not compared to anyone else's.
Building one
Start by listing everything you avoid because of this fear, without editing. Aim for fifteen or twenty items rather than five — a hierarchy with big gaps in it is a hierarchy you will get stuck on.
Then vary the dials. The same situation at a different time of day, with or without a companion, for five minutes or thirty, in a familiar place or a new one — each variation is a different rung. This is where a good clinician earns their fee: they will find the intermediate steps you cannot see.
- Rate each item 0–100 as it stands today.
- Fill the gaps: you want steps roughly ten points apart, not forty.
- Start around 30–40. Low enough to do, high enough to teach.
- Note the safety behaviour attached to each item — it comes off as you climb.
Why you do not start at the top
Not because the top is dangerous, but because the first exposure teaches you what exposure is. If the first attempt fails, the lesson learned is that you cannot do this. Starting at 30 buys a success, and successes are what make the 60s possible.
The ladder is also not a staircase you climb once. Items get repeated, in different contexts, until they are genuinely dull. Repetition in varied settings is what makes the learning stick outside the therapy room.
The number that matters
It is tempting to treat a falling SUDS score as the goal. Modern exposure practice treats it as a side effect. The target is the prediction: what did you think would happen, what actually happened, and how sure are you now? Anxiety often drops later, and sometimes it does not drop much at all while your life expands anyway.