David Grove once said, “Metaphors have a short half-life,” borrowing a term from medicine to describe how quickly a substance leaves the system.
Often, a metaphor arises in a session vivid, alive, and felt. Days later, the client can’t recall it at all.
And yet, some metaphors stay. Many practitioners can recall metaphors from years ago as if they were beloved old friends—the images, the movement, even the bodily felt sense. Sometimes, intriguingly, they remember the metaphor but no longer remember exactly what issue it was “about”.
Why do some metaphors vanish while others endure?
A few possibilities:
- Depth of development. Metaphors that are explored with multiple clean questions—location, size, movement, time—may become more richly embodied and therefore more memorable.
- Relevance over time. Some metaphors might do their job—create a small shift—and then quietly recede when no longer needed.
- Unconscious storage. As one practitioner suggested, some metaphors may continue to “live” out of awareness, still shaping our experience even when not consciously recalled.
From a clean standpoint, part of our role is to extend the half-life of helpful metaphors just enough for them to integrate:
- Stay with them longer in the session.
- Invite clients to draw them, write them, or notice where they show up in daily life.
- Ask: “What difference does knowing that metaphor make?” and “How will you know more about that?”
And when metaphors fade, we might trust that either they’ve completed their work—or they’ll reappear, or be replaced, at just the right time.