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AHA Hypnotherapists Directory

Biography for Marietta C. Diossa

Marietta C. Diossa

Born and raised in Colombia, Marietta moved to California 30 years ago. In 2007 she was diagnosed with a medical condition that helped her understand the role that the mind and emotions play on the development of health issues. It was then when she was introduced to hypnotherapy and, realizing the great results that this holistic approach had on her life and health, she decided to pursue this career to assist other people in developing the amazing ability that the subconscious mind has and how to utilize it for their own benefits.

It was at this time when Marietta discovered the new passion in her life; that is, to facilitate people in redirecting their negative experiences, emotions, and feelings using positive suggestion through hypnosis. Marietta can help others to enhance their life journey, release stress, overcome fears, let go of their resistance and self-sabotage, accomplish goals, find relief, and move forward comfortably into a more confident, positive life.

Languages Spoken

  • English
  • Spanish

Hypnotherapy Specialties

  • Anxiety
  • Child Birth
  • Chronic Pain
  • Fears
  • Stop Smoking


Marietta works with clients using Therapeutic Imagery, Dream Therapy, Emotional Freedom Technique, Breathing Exercises and Handwriting Analysis.


  • Diploma in Clinical Hypnotherapy with Honors
    Hypnosis Motivation Institute - Nationally Accredited College of Hypnotherapy - 818-758-2720
    Date Started: 06/17/2007 - Date Graduated: 06/17/2008
    Total Hours: 720 - Total Weeks: 52 - Total Years: 1

Continuing Education

  • Certified Master Practitioner of Therapeutic Imagery – American Hypnosis Association – 818-758-2747
  • Stop Smoking – American Hypnosis Association
  • Weight Loss – American Hypnosis Association
  • Hypnosis and Pain Management – American Hypnosis Association
  • Reiki II Practitioner – Jassica Miller – Reiki Master – 626 963-3533

Continuing Education from the American Hypnosis Association

  • Business Basics: Tools to Get, Retain and Help More Clients - 04/2020
  • Healthy Boundaries - 04/2020
  • How to Release Self-Limiting Beliefs - 05/2020
  • Intimate Conversations with Dr. John Kappas - 06/2018
  • Superbrain Yoga and Pranic Healing - 05/2020
  • Tapping the Subconscious through Conversational Hypnosis - 05/2020
  • The 12 Steps of AA and Hypnotherapy - 05/2020
  • The Art of Positive Thinking - 05/2020
  • Transcendent Aspects of the Human Experience - 05/2020

Certifications from the American Hypnosis Association

  • Healing the Inner Child - 05/2013
  • Hypnosis and Childbirth - 08/2012
  • Hypnosis and PTSD - 06/2018
  • Hypnosis and Seniors - 11/2013
  • Hypnosis for Immune Disorders - 06/2017
  • Hypnosis for the Caregiver - 06/2015
  • Past-Life Regression Therapist - 01/2011


  • Honors Graduate
    Hypnosis Motivation Institute - 07/24/2008

Professional Memberships

  • American Hypnosis Association
    Member Since: 2005

Contact Information

Marietta C. Diossa
Simi Valley, California 93065, United States