About Fiona

“I really love my job for the sole reason that every day I have the opportunity to help people to see the power of their own minds and to control behaviours and feelings that they believed were controlling them.”

Bestselling Books and Five-Star Rated Online Courses

Building on her success, in 2016 Fiona launched her first online, five-star rated, hypnotherapy program, The Positive Habit,’ which now helps people from all over the world. Her first book (2019) is the Irish Times and Eason’s bestseller, The Positive Habit,’ published by Ireland’s leading non-fiction publisher, Gill Books. Her most recent book, The Self-Love Habit,’ was published in February 2021 and hit the best-seller list straight away. Her latest online hypnotherapy course, Light Up Your World’ is taken directly from her clinical work and is a truly transformational programme based on cutting-edge and up-to-date research in the areas of hypnosis, positive psychology, lifestyle medicine, neuroscience, and mindfulness. Fiona’s latest upcoming book on sleep will be published in April 2024 and is sure to become a best-seller. It is entitled ‘Sleep Well, 8 Habits to Help You Get to Sleep, Stay Asleep & Wake Up Refreshed’ and is based on the latest sleep science.

Inspirational Speaker

Fiona is a TEDx and key note speaker. She regularly delivers workshops on a range of areas from stress and anxiety to building confidence and public speaking to many multinational companies, charities, and other organizations. These have included the Chartered Institute of Accountants, Home Instead, the National College of Ireland, Bank of Ireland, Sanofi, Astra Zeneca, Clayton Hotels, the Frankfurt School of Finance & Management & DCU. Full list here.

Fiona has a weekly video newsletter that goes out to thousands of subscribers and she is active on social media – Instagram (@the_positive_habit_).

About Fiona

Fiona is an acclaimed Clinical Hypnotherapist with a constantly booked-out private clinic in Blackrock, Co. Dublin. She is a two-times best-selling author, a regular contributor to the media on Newstalk (Ireland) and The Business Post. Fiona is a TEDx speaker and appears regularly in the mainstream media where she is an ambassador for positive thinking and wellbeing. Full media list here.


Fiona completed post-graduate training with the Royal College of Surgeons studying for the Professional Diploma in Positive Health incorporating Life Style Medicine in their internationally recognized Positive Psychology Department. Fiona has previously trained in positive neuroplasticity with the eminent neuropsychologist, Dr Rick Hanson. Fiona has a Higher Diploma in Theatre & Performance from UCD and a Higher Diploma in Clinical Hypnosis awarded by Clinical Hypnosis Ireland. She has studied Positive Psychology at The University of North Carolina at Chapel Hill. She holds a Professional Certificate in the Therapeutic Use of Mindfulness from the Institute of Integrative Counselling & Psychotherapy.

Fiona graduating from the Royal College of Surgeons Ireland

Fiona was nominated for the Eir Power of Women Awards 2022 (Digital & Tech Section):

Fiona Brennan at the Eir Power of Women Awards 2022
Nominations at the Eir Power of Women Awards 2022

Fiona uses her creative and performance experience to great benefit in her work as a hypnotherapist; the use of the imagination is an essential tool in hypnosis and Fiona’s unique way of tapping into her clients’ imagination empowers them to transform their lives.

Clients learn to master the power of their subconscious minds’ in ways they may never have imagined possible. Fiona is highly committed to each and every client and has an excellent record of achieving successful outcomes. The root of her success is twofold: a results-driven approach and a focus on ensuring and delivering a session that is as individual as the client.


Fiona has an open and friendly disposition that provides clients with a safe place to make the changes in their lives they wish to. She operates a friendly, professional clinic that guarantees confidentiality.

FFiona and Tomi Reichental

Fiona with Tomi Reichental, author, speaker, educator and Holocaust survivor.

Fiona with Deepak Chopra and Jack Canfield

Fiona with Deepak Chopra and Jack Canfield at the Pendulum Summit in New York

Fiona with Dermot and Dave at the Book Launch 6th March 2019 - today fm podcasts

Fiona with Dermot & Dave (Today FM) at the launch of ‘The Positive Habit.’

Fiona and Bressie

Fiona with Niall Bresslin aka Bressie, the mental health activist.

Fiona meets Rick Hanson

Fiona with eminent Neuropsychologist, Dr. Rick Hanson.