• Mark Colletti

    FOUNDER

    Mark, the founder of Seeking Minds, is a Gestalt Psychotherapist who commenced working in the social welfare sector in 2012. He has worked in Aboriginal and Torres Strait Islander communities and the community services sector across Australia, particularly with trauma, sexual abuse, and family violence survivors and adolescent and youth out-of-home care. Mark is passionate about addressing the youth and adult mental health gaps across the service sector through a combination of Gestalt Psychotherapy and EMDR.

    As part of Mark’s work with organisations and in the welfare sector, he realised that there is a tremendous organisational responsibility to support those working for them to manage their vicarious trauma. He works with organisations to strengthen internal partnerships which promotes cohesion and identification of common goals to achieve the organisation’s identified deliverables.

    Mark holds registration with the Psychotherapy and Counselling Federation of Australia.

  • San (Sun) Leenstra

    SENIOR PRACTITIONER

    San joined Seeking Minds in 2024. San believes in the power of creativity and she is a Registered Art Therapist (AThR), but also holds a Masters’ degree in Family Therapy. With over 20 years’ experience working therapeutically in mental health, disability and trauma treatment, San believes in assisting people, meeting them where they are at and to find a way forward together.

    San is passionate about balancing honesty and empathy, being straight forward as well as gentle, kind and non-judgemental. San is passionate about working in relationship with others, to allow each perspective to be heard, valued and taken seriously. San works client-centred, with unconditional positive regard for the clients we work with.

    San has elaborate experience in providing staff training, trauma informed clinical supervision and reflective practice and has delivered conference presentations across Australasia.

    San holds professional clinical membership with ANZACATA (Australia, New Zealand and Asian Creative Arts Therapies Association) as well as with AAFT (Australian Association of Family Therapy).