April (13-15) and October (5-7)2026

3-day ACT & IFS Retreat with Psilocybin (truffels)

12 PE Points NVRG

ACT & IFS Retreat

Are you familair with ACT or IFS and sense more is possible?
Are you curious how psychedelic experiences can deepen ACT and IFS processes?

During this three day retreat, Acceptance and Commitment Therapy, Internal Family Systems, and a guided psilocybin journey with truffles come together.


This retreat offers a rare opportunity to expand your professional practice while engaging in a profound personal process.

Why this retreat?

AA=CT and IFS are powerful approaches for deep self inquiry and transformation.


Psychedelic experiences often open the exact space where psychological flexibility within ACT and Self energy within IFS come alive.

Together with a small group of therapists, you enter a safe and contained setting where you:

  • Experience directly how ACT and IFS converge within a psychedelic context.

  • Explore how these approaches translate into clinical practice.

  • Engage your own inner process so your therapeutic presence deepens.

  • Learn to apply ACT and IFS within therapeutic settings and change processes.

  • Gain insight into the role of psychedelic experiences within therapy.

  • Support clients in self reflection, psychological flexibility, and Self leadership.

ACT, IFS and Psilocybine (truffels):
How does this combo work?

ACT, Acceptance and Commitment Therapy, focuses on expanding psychological flexibility through acceptance, cognitive defusion, and committed action.

IFS, Internal Family Systems, supports recognition and understanding of inner parts shaped by early survival strategies.

Psilocybin containing truffles deepen these processes by softening habitual thinking patterns. Suppressed parts move to the foreground and meet compassion.

During this retreat we work with:

ACT: Exercises to expand psychological flexibility and relate differently to difficult emotions.

IFS: Contact with inner parts and strengthening Self energy.

Psilocybin truffles: A guided inner journey supporting deep insight and release of stuck patterns..

Living room with large glass doors leading to an outdoor patio, beige curtains, tan cushioned lounge chair and ottoman, a beige sofa with pillows, and a potted plant on a black side table.
Aerial view of a house with solar panels on the roof, surrounded by green trees and a landscaped garden with outdoor seating around a fire pit.
A plate of assorted vegetables and dips on a woven placemat at a dining table. The plate includes carrot and purple cabbage slaw, green edamame, a small bowl of herb dip, and pink shrimp crackers. In the background, there are more plates and glasses on the table in a well-lit dining room.
Looking up inside a wooden yurt canopy with a circular opening revealing a bright blue sky.

Details

Locatie: The Matter, Culemborg

Datum: 13-15 April, 5-7 October 2026

Door: Denise Matthijssen and Jeanine Souren

Voor: ACT en IFS geïnformeerde professionals

Duur: 3 days

Prijs: €2150 (BTW vrijgesteld), inclusive accommodation en meals

Size: Small group, carefully attuned and guided

We know how valuable it is for therapists to experience firsthand what clients may encounter.


This three day retreat invites you to deepen your own process and experience what the combination of ACT, IFS, and psychedelics makes possible.

A red autumn maple leaf and several acorns on a wooden surface.

Want to know more or register?

Would you like to learn more or sense whether this fits you?
Feel free to contact us.
We look forward to making this journey together.

Contact us here