International Partners
Psychedelic Sitters School collaborates with educators, facilitators, and clinicians around the world who share a commitment to ethical, trauma‑informed, mindfulness‑based psychedelic education. Our international partners support local communities while remaining connected to a global field of practice, dialogue, and learning.
Laurin Angermeier
Berlin, Germany
I’m Laurin, based in Berlin. I work as a psychedelic facilitator with a Masters in neuroscience (King’s College London), supporting individuals and couples in 1:1 settings as well as small groups. My work integrates neuroscience, somatic therapies, mindfulness, and psychedelic-informed processes. I try to include cannabis as much as possible in these processes and group settings whenever there is openness and a supportive context, as I see it as a deeply relational, body-oriented, and accessible medicine. Depending on the person and the container, I also work with other substances in carefully prepared and integrated settings.
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Alongside 1:1 work, I occasionally offer group experiences, including cannabis-assisted breathwork journeys, both online and in person. These focus on nervous system regulation, emotional processing, and building an intentional, ongoing relationship with the medicine rather than chasing peak experiences. These became very popular but require lots of planning and care that often, unfortunately, become financially not sustainable. I’m particularly interested in formats that are scalable while still preserving depth, safety, and integration, which makes this international initiative feel very aligned.
Javiera Köstner
California
Javi is an Advanced Therapeutic Yoga Teacher (ERYT-500), Credentialed Mindfulness-Based Psychedelic Guide, Integrative Coach, and Somatic Psychotherapy student at the California Institute of Integral Studies (CIIS). Her work bridges mindfulness, somatic healing, and expanded-state practices through a trauma-informed lens.
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Originally from Chile, Javi is bilingual (Spanish–English) and brings a Latin American perspective to psychedelic education and facilitation. Her path into this work emerged from lived experience with chronic illness, pain, and anxiety, shaping a deep commitment to embodied safety, nervous-system regulation, and relational healing.
She specializes in Trauma Recovery Yoga, mindfulness-based somatic practices, cannabis-assisted ceremony, and breathwork. Javi studied with Ganja Yoga founder Dee Dussault and is the creator of Magic Breathwork, a modality that combines the power of intentional breathwork with microdosing for deep healing and connection.
Javi is a facilitator and educator with the Center for Medicinal Mindfulness, where she supports training programs and is especially devoted to expanding access to psychedelic education for Spanish-speaking communities.
In 2018, she co-founded Green Magic Yoga with her husband Sebastian, offering community-centered circles and trainings in the Bay Area and online. She is also the co-founder of the Santa Cruz Psychedelic Society non-profit organization, where she serves as Community & Events Director, supporting psychedelic education, risk-reduction, integration, and ethical community stewardship.
About Javiera Köstner in Spanish
Javi es profesora avanzada de Yoga Terapéutico (ERYT-500), Guía Psicodélica, Coach Integrativa y estudiante de Psicoterapia Somática en el California Institute of Integral Studies (CIIS). Su trabajo integra mindfulness, sanación somática y prácticas de estados expandidos de conciencia desde un enfoque informado en trauma.
Originaria de Chile, Javi es bilingüe (español–inglés) y aporta una perspectiva latinoamericana a la educación y facilitación psicodélica. Su camino hacia este trabajo surge de su experiencia personal con enfermedad crónica, dolor y ansiedad, lo que ha dado forma a un profundo compromiso con la seguridad encarnada, la regulación del sistema nervioso y la sanación relacional.
Se especializa en Yoga para la Recuperación de Trauma, prácticas somáticas basadas en mindfulness, ceremonias asistidas con cannabis y trabajo de respiración. Javi se formó con Dee Dussault, fundadora de Ganja Yoga, y es la creadora de Magic Breathwork, una modalidad que combina el poder de la respiración intencional con la microdosificación para facilitar procesos profundos de sanación y conexión.
Javi es facilitadora y educadora en Center for Medicinal Mindfulness, donde apoya programas de formación y está especialmente comprometida con ampliar el acceso a la educación psicodélica para comunidades de habla hispana.
En 2018, cofundó Green Magic Yoga junto a su esposo Sebastián, ofreciendo círculos y formaciones centradas en la comunidad en el Área de la Bahía de San Francisco y en modalidad online. También es la co-fundadora de Santa Cruz Psychedelic Society, organización sin fines de lucro, donde se desempeña como Directora de Comunidad y Eventos, apoyando iniciativas de educación, reducción de riesgos, integración y cuidado ético de la comunidad en torno a plantas sagradas, enteógenos y psicodélicos.
Shaun Lacob
Tel Aviv, Israel
CEO and co-founder of ACPT (Association for Integration of Psychedelic Treatments), established in 2023 to advance psychedelic-assisted therapy in Israel. Brings over 20 years of youth work and crisis intervention experience to psychedelic therapy, including founding Israel’s first psychedelic harm reduction service “Anshim Tovim” while working with Elem, the country’s largest at-risk youth organization.
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From 2014-2019, ran drop-in centers for Israeli backpackers in India, creating safe spaces for travelers in all states including under the influence of psychedelics and cannabis. Worked extensively with people processing combat trauma from recent military service while on psychedelics, witnessing the therapeutic potential firsthand. That experience, combined with exposure to research at ICPR 2014, shifted focus from harm reduction to therapeutic applications.
Trained at Center for Medicinal Mindfulness in cannabis-assisted psychedelic therapy and currently works with licensed cannabis patients. Completed ketamine training with Phil Wolfson through Psyk-ed in 2023 and integrates ketamine into practice. Holds BA in Psychology (York University) and M.Sc in Applied Educational Psychology/counseling (Northeastern University). Active in Israel’s psychedelic and harm reduction communities, member of ILSAM’s harm reduction forum and MIND Foundation’s Mental Health Professionals forum, and regular attendee at international psychedelic conferences.
About Shaun Lacob in Hebrew
פסיכדליים בישראל ע”ר), שנוסדה ב-2023 כדי לקדם טיפול בסיוע פסיכדלי בישראל. מביא יותר מ-20 שנות ניסיון בעבודה עם נוער וטיפול במשברים לתחום הטיפול הפסיכדלי, כולל הקמת שירות מזעור הנזקים הפסיכדלי הראשון בישראל “אנשים טובים” תוך כדי עבודה בעלם, הארגון הגדול ביותר לנוער בסיכון בארץ.
בשנים 2014-2019, ניהל מרכזי קליטה לישראלים בהודו, ויצר מרחבים בטוחים למטיילים בכל המצבים, כולל תחת השפעת פסיכדליים וקנאביס. עבד רבות עם אנשים שעיבדו טראומות קרביות משירות צבאי לאחרונה תחת השפעת פסיכדליים, והיה עד לפוטנציאל הטיפולי ממקור ראשון. החוויה הזאת, יחד עם חשיפה למחקר ב-ICPR 2014, הסיטה את המיקוד מצמצום נזקים ליישומים טיפוליים.
התמחה ב-Center for Medicinal Mindfulness בטיפול פסיכדלי בסיוע קנאביס, ועובד כיום עם מטופלי קנאביס רפואי בעלי רישיון. השלים הכשרה בקטמין עם פיל וולפסון דרך Psyk-ed ב-2023 ומשלב קטמין בפרקטיקה. בעל תואר ראשון בפסיכולוגיה (York University) ותואר שני בפסיכולוגיה חינוכית שימושית/ייעוץ (Northeastern University). פעיל בקהילות הפסיכדליות וצמצום הנזקים בישראל, חבר בפורום צמצום הנזקים של ILSAM ובפורום אנשי מקצוע לבריאות הנפש של MIND Foundation, ומשתתף
Monique (Sundlie) Lefebvre
Edmonton, Alberta, Canada
Licensed Psychotherapist (20 years), 10 years in private practice with Sun Rise Therapy Ltd. Professionally trained at University of Calgary and University nuhelot’įne thaiyots’į nistameyimâkanak Blue Quills, in Bachelor of Social Work (BSW) and Master of Social Work (MSW) in Clinical and Indigenous Specialization, miyo ototemihtohiwew otaoskew (Cree: working for good relationships within the community). Published articles in the Australian Journal of Social Work: Medicine Wheel in Social Work, and in an academic book teaching Indigenous social work, chapter: Ethical Space in Social Work Practice. International Institute of Clinical Sexology, Florida: Certified Clinical Sexologist, All-But-Dissertation completed in Doctor of Philosophy in Clinical Sexology. Specializations in sexual trauma, alternative relationships, Kink, and Transgender Care. Alberta College of Social Workers: Registered Clinical Social Worker (RCSW), Registered Social Worker (RSW), Registered Clinical Supervisor. Specializations in clinical supervision, trauma resolution, addictions, early trauma, dissociation, psychedelics, and sexuality. Certified EMDR, EMDR 2.0. Guest Instructor: KEAN Events and the University of Calgary.
Read More about Monique (Sundlie) Lefebvre
Psychedelic Training. The Center for Medicinal Mindfulness: Specializations in Certified Mindfulness-Based Psychedelic Therapist (MBPT), Cannabis-Assisted Psychedelic Therapist (CAPT), DMTx, Magical Mystery School, Breath Work, and co-facilitator of in-person and on-line training for Psychedelic Sitters School. ATMA CENA: Introduction to Psychedelic Therapy, Advanced Practices in Psychedelic Therapy (PAT), Ketamine-Assisted Psychedelic Therapy (KAT). Toad School: 5 MEO-DMT facilitator specialist. Kutenai Art Therapy Institute: Psychedelic Art Therapy, DBT & Art Therapy.
Monique is a skilled and experienced psychonaught, facilitator of conventional and psychedelic trauma therapy, group psychedelic experiences, Conscious Cannabis Circles, skilled psychedelic therapy trainer, Preparation and Integration Specialist, and ceremonialist. Employing Medicine Wheel technology throughout all aspects of her professional and psychedelic practice, and teaching, to support people moving through transitions, grief, trauma healing, and all the healing pathways related to authentic human.
Piotr Matejuk
Poland
Psychedelic therapist, psychotraumatologist, crisis intervention specialist, trainer, and hypnotherapist with 14 years of experience working therapeutically with individuals and groups. Co-founder of the Professional School of Hypnotherapy in Warsaw, practitioner of psychedelic-assisted psychotherapy, and PhD candidate at the Institute of Psychology of the Polish Academy of Sciences, researching the effects of Holotropic Breathwork. Member of the Society for Clinical & Experimental Hypnosis, graduate of the Integrative Psychiatry Institute (Boulder, CO) in Psychedelic-Assisted Therapy Training and the Psychedelic Sitters School (Boulder, CO). Currently in certification with MAPS (Multidisciplinary Association for Psychedelic Studies). Collaborates with the Center for Medicinal Mindfulness. Author of the book “Autohipnoza – Close Encounters with Yourself”.
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He has lectured at the Medical University of Silesia and Jagiellonian University on therapeutic work in expanded states of consciousness. Organizer of psychological and psychedelic zones at consciousness festivals (Wibracje Festival, Simbiosa Festival, Uroczysko, Pol’And’Rock Festival). Founder of the psychedelic festival CIEŃ. Producer of films on non-ordinary states of consciousness. Author of numerous publications and articles in Poland’s leading psychology journals – Charaktery and Psychologia w Praktyce.
He is also a media expert on psychedelics and expanded states of consciousness, frequently invited to programs on TVP 2, Polish Radio Channel 3, ChilliZet, TOK FM, and others.
About Piotr Matejuk in Polish
Terapeuta psychodeliczny, psychotraumatolog, interwent kryzysowy, trener, hipnoterapeuta z 14-letnim doświadczeniem w pracy terapeutycznej z klientami indywidualnymi i grupami, współtwórca Profesjonalnej Szkoły Hipnoterapii w Warszawie, praktyk psychoterapii wspieranej psychodelikami, doktorant w Instytucie Psychologii Polskiej Akademii Nauk badający efekty Oddychania Holotropowego, członek Society for Clinical & Experimental Hypnosis, absolwent Integrative Psychiatry Institute (Boulder, CO) na kierunku Psychedelic-Assisted Therapy Training oraz Psychedelic Sitters School (Boulder, CO), w trakcie certyfikacji MAPS (Multidisciplinary Association for Psychedelic Studies), współpracuje z Center for Medicinal Mindfulness, autor książki “Autohipnoza – Bliskie spotkania z samym sobą”. Prowadził wykłady m.in. na Śląskim Uniwersytecie Medycznym oraz Uniwersytecie Jagiellońskim w zakresie pracy terapeutycznej w poszerzonych stanach świadomości. Organizator stref psychologiczno-psychodelicznych na festiwalach świadomościowych (Festiwal Wibracje, festiwal Simbiosa, Uroczysko, Pol’And’Rock Festival). Organizator psychodelicznego festiwalu CIEŃ. Producent filmów z tematyki poszerzonych stanów świadomości. Autor publikacji i artykułów w najpopularniejszych czasopismach psychologicznych w Polsce – “Charaktery” i “Psychologia w Praktyce”.
Pete Volos
Sydney, Australia
Pete Volos is a somatic-based facilitator, psychedelic cannabis guide, and kinesiologist based in Sydney, Australia. His work focuses on cannabis as a psychedelic, nervous system regulation, and trauma-informed embodiment. He bridges modern somatic psychology, energy healing, breathwork, and movement-based practices to support deep emotional release, integration, and embodied healing.
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Pete completed his psychedelic and somatic training with The Center for Medicinal Mindfulness, specialising in Cannabis-Assisted Psychedelic Therapy (CAPT), Mindfulness-Based Psychedelic Therapy (MBPT), and psychedelic Preparation & Integration frameworks. He is known for a grounded, non-dogmatic, body-first facilitation style, supporting clients in reconnecting with their bodies, emotions, and innate capacity for self-regulation and insight, without forcing catharsis or spiritual bypass.
He has extensive experience facilitating 1:1 sessions, group work, and mult-day psychedelic cannabis retreats. His approach prioritises safety, pacing, body-led awareness, and integration, particularly for individuals working with early trauma, dissociation, anxiety, and nervous system freeze responses.
Pete is the founder of Psychegetics, a somatic and psychedelic therapy business and education platform dedicated to embodied healing, conscious cannabis practice, and nervous system-informed transformation.