Corporate Services

Hypnosis entertainment for corporate events or private parties.

Jason’s live show is unique.

Hypnotherapy Training

We offer training in clinical hypnotherapy

Buy Sessions from €99

  • Weight Loss
  • Stop Smoking
  • Fear of Flying
  • Anxiety/Stress
  • Public Speaking
  • Instant Confidence
  • Insomnia
  • Reduce Alcohol

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Try Hypnosis NOW

Listen to a Free Relaxation Session

*Not to be used when driving or using machinery. Not suitable for those on psychiatric medicine or those with epilepsy.

Try Hypnosis NOW

Listen to a Free Relaxation Session

*Not to be used when driving or using machinery. Not suitable for those on psychiatric medicine or those with epilepsy.

Call us now on 086 7834952 for a free phone consultation.

Hypnotherapy Training

Hypnotherapy Training

Do you have an interest in hypnosis? Looking for a new career?  Would you like to train as a hypnotherapist?
We offer training in clinical hypnotherapy

Next Event:   TBA


We are not currently looking to fill any roles at the moment.


Corporate Entertainment 

The D4 Clinic provides a wide variety of services and entertainment for the corporate sector in Ireland and abroad.

These include Intel, Aspen Pharma, Pieta House, Core Media, The Irish Army, Fine Gael, University College Cork, Trinity College Dublin, Athlone It, First Finance plus many more household names.


We have also been featured as experts on mental health on nearly all forms of media in Ireland including RTE, TV3, The Sunday Independent, The Sunday Business Post, The Irish Times, Newstalk and The Irish Independent.


Internationally we have appeared in The Huffington Post, The Express, Taiwan News, Metro London, Magic FM UK, The Mail online to name but a few.



In house Wellness talks on Mental Health.
(Trinity College Trained Psychologists will come to your company or event and explain how your staff can improve and understand their own mental health)

 Reduced Rates for your staff on in-clinic sessions.  A staff member who smokes will work one month less per year due to smoking breaks and illness, then a non-smoker. We offer organisations such as the Gardai reduced rates on our Stop Smoking program (normally €299 but your staff only pay €299). This gives unlimited sessions in our Blackrock Clinic until the client quits.

We also offer sessions for reducing anxiety and stress, improving confidence, becoming a better public speaker, reducing fears and phobias, insomnia plus personal counselling. Normal fee is €99 an hour, reduced to €80 an hour for your staff. These can also be invoiced to the company.

Speakers for events, networking, social, entertainment.  In-house or at your annual conference, psychologist, D4 Clinic founder and bestselling author Jason O’Callaghan will entertain your staff or clients with a talk that will suit whomever is in the room.



Increase Sales:
In this amazingly interesting keynote speech Jason mixed psychology and science with a little bit of magic, mentalism and clinical hypnosis to demonstrate how the unconscious mind works and how it can be used to reach higher goals and targets for the individual and company
Networking Dream:
Do you want your staff to mix and get to know each other and bond? Jason gets everyone involved in a journey into the sub-conscious mind and teaches staff how to better communicate with co-workers, how to improve performance and how to gain confidence within the work place.
Jason can perform a Derren Brown/Keith Barry style show for your event with magic, mindreading and even some comedy hypnosis to entertain your guests or staff. Watch Jason live on air as he shockes comedian PJ Gallagher



Jason also recently performed live on air for the promotion of the new blockbuster movie “Get Out”

Watch Jason spellbind officers at The Curragh Camp for a show for the Irish Army

Book our hypnotist show here with a €100 non refundable booking deposit

Call Now

Perfect for daytime, team building, light entertainment or to increase sales and performance within your company and guarantee a fun night with unique style for your event.

Call Jason direct to discuss your needs on 086 7834952