Leaves on a stream: letting a thought float past.

Where it comes from

From the original ACT manual — Hayes, Strosahl & Wilson (1999). Defusion is one of ACT’s six core processes.

How to do it

1. Picture the stream. Eyes closed or soft gaze. A stream moving steadily past you, leaves drifting on the surface. Take twenty seconds to let it be real enough.
2. Put each thought on a leaf. Whatever shows up — “just once”, “nobody would know”, “you’ve already ruined it” — put the words on a leaf. Images go on leaves too.
3. Let it float. Don’t push it. You’re not speeding the leaf up or making it sink. You’re letting the stream do what streams do. If the thought comes back, it goes on another leaf.
4. Notice when you’ve floated off. You will get carried away — into the thought, into planning, into a memory. That isn’t failure. Noticing it is the rep. Come back and start the stream again.

Why it works on a porn urge

• The thought “just five minutes” isn’t dangerous because it’s true. It’s dangerous because it’s believed. Defusion attacks the believing, not the thought.
• You cannot suppress your way out. Trying not to think about it hands it your whole attention — the classic experiential-avoidance trap ACT was built to solve.
• It’s a rep, not a fix. Getting carried off and noticing it is the exercise working, not failing.

How WithAnchor does it

The Leaves player gives you the stream and the pacing, so you can practise it when nothing’s happening — which is the point. It’s a skill you want already installed before 2am.

It’s one of six practices in the app — use one, use them all. There’s no order, no progression, and no badge at the end.