Andrei Mateus

Andrei Mateus Delgado Viana

Psychologist

I base my listening and interventions on Acceptance and Commitment Therapy, and since 2019, I've been working as a clinical psychologist and psychotherapist. I am passionate about human complexity, and empathy is one of my personal values. Appointments are available in English, Portuguese and Spanish.

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About Me

As a clinical psychologist and psychotherapist since 2019, I base my work on Acceptance and Commitment Therapy (ACT). I offer an empathetic space where we collaboratively explore your values and develop practical strategies. This approach is ideal for those grappling with life's complexities, helping you engage more fully with your life. Sessions are available in English, Portuguese, or Spanish.

Approach

We begin by noticing what matters to you and shaping sessions around choices that feel meaningful and doable. In Budapest and online, in English, Portuguese and Spanish, appointments keep a steady, practical rhythm—focused check-ins, brief in-session experiments and clear takeaways to practice between meetings. Drawing on ACT-informed exercises and occasional biofeedback-style tracking, we translate insight into simple habits that ease anxiety, support life transitions and shift unhelpful patterns. This way of working tends to suit adults seeking grounded, actionable steps toward personal growth.
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Basic Information

Not taking new referrals

Services


I offer Acceptance and Commitment Therapy, Functional Analytic Psychotherapy and Biofeedback training. I'm experienced with depression, anxiety, life changes support as well as couples counseling and career counseling.

Services Offered:

  • ACT (Acceptance & Commitment Therapy)

    A form of therapy that teaches acceptance of difficult thoughts and feelings while guiding action aligned with personal values.

    Learn more about ACT (Acceptance & Commitment Therapy)
  • Biofeedback

    A technique that uses sensors to show you real-time data about your body's responses (heart rate, muscle tension, breathing) so you can learn to regulate them.

    Learn more about Biofeedback
  • Counseling

    A form of talk therapy providing a safe, confidential space to explore feelings, thoughts, and behaviours with a trained professional.

    Learn more about Counseling
  • Schema Therapy

    A therapy that identifies deep, long-standing emotional patterns (schemas) formed in childhood and works to change the ones that cause recurring problems.

    Learn more about Schema Therapy

Works With:

  • Adults
  • Groups
  • Organisations

Area of Expertise


Scope of Practice:

  • Life Transitions

    Major life changes, such as relocation, retirement, parenthood, or career shifts, that disrupt routine and require psychological adjustment.

    Learn more about Life Transitions
  • Anxiety

    Persistent worry, nervousness, or fear that is disproportionate to the situation and interferes with daily functioning.

    Learn more about Anxiety
  • Behaviour or Conduct Issues

    Persistent patterns of defiant, aggressive, or rule-breaking behaviour in children or adolescents that significantly disrupt home, school, or social life.

  • Personal Development

    The ongoing process of self-awareness, self-improvement, and reaching one's potential, pursued not because something is wrong but to live more fully.

  • Online Therapy

    Therapy sessions conducted over video call, phone, or secure messaging, using the same professional methods delivered remotely.

    Learn more about Online Therapy

Professional Title:

  • Psychologist

    A professional trained to assess and treat mental health conditions using evidence-based psychological methods.

Qualifications


Eötvös Loránd University

Faculdade São Marcos

UDF University Center

Registrations


Conselho Federal de Psicologia

Psychologist

Registration: 01/21624

Verify License

Memberships


Association for Contextual Behavioral Science (ACBS)

Associate Member

Service Area


Online Practice from Hungary

In-person & Online

Budapest, Budapest

Hungary

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