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Jason O'Callaghan's

D4 Clinic
Hypnosis

Welcome to the official website for The D4 Clinic, the leading hypnotherapy service for both in clinic (Dublin), online and downloadable hypnotherapy services.

As seen on

Psychologist Specialising in Clinical and Event Hypnosis

Member of the Psychology Society of Ireland M.Ps.S.I. (Membership No M13886)

Over 100 5-Star Reviews – A Track Record You Can Trust
Now open 9am to 8pm 7 days a week
Next-day appointments available

Online Sessions from €99

The D4 Hypnotherapy Clinic Dublin was founded in 2012 and is run by Psychologist and Clinical Hypnotherapist, Jason O’Callaghan.

Jason offers face to face hypnotherapy sessions in his Blackrock Dublin clinic, personalised audio sessions made to order and emailed to your phone and pre-recorded hypnotherapy bundles which can be downloaded to your device.

He has been published in the world famous "Mayo Clinic" Ranked No1 Hospital in the world for his research on hypnotherapy.

He holds a Master’s degree from Trinity College in Applied Psychology, a BA (Hon’s) in Psychology plus qualifications in CBT, Mindfulness, Counselling and media.

He also appeared as an expert on ITV's This Morning, 2FM, TG4, Newtalk plus many more media outlets and is annually asked to be a speaker at a variety of conferences including The National Guild of Hypnotists (USA) Hypnothoughts (USA) The UK Hypnotherapy Convention and The Irish Hypnotherapy Conference.

He has also written the bestselling Psychology book "Get the Life you Deserve"

Contact Jason now to allow him to help you with your needs.

 

Jason is the only Irish Hypnotherapist
whose research is published in the world-famous Mayo Clinic

➡️   Click to Read his Work
with children and needles

TV/Radio star Lucy Kennedy thanks D4 Clinic for helping with fear of flying

Would you Like to Get the Life You Deserve?

PLEASE NOTE: ONCE PAID FOR ALL HYPNOTHERAPY PROGRAMS BOTH IN CLINIC OR ONLINE ARE NON-REFUNDABLE
NOTE: HYPNOTHERAPY IS NOT SUITABLE FOR THOSE WITH EPILEPSY OR FOR THOSE ON SERIOUS PSYCHOTIC MEDICATION
SOME DOWNLOADABLE PRODUCTS ARE ACCESSED VIA THE FREE VERSION OF THE DROPBOX APP. IF YOU CAN’T ACCESS THIS APP SOME DOWNLOADS MAY NOT WORK ON YOUR DEVICE. 
AUDIO FILES ARE DELIVERED ON MP3 or MP4.  WHILE MOST DEVICES DO, PLEASE ENSURE YOUR DEVICE HAS SOFTWARE TO PLAY THIS TYPE OF AUDIO FILE.

Get Consistant Results with D4Clinic

Watch Jason on This Morning with Phil and Holly

Bus drive loses over 4 stone with the D4 Clinic. Hear his story

D4 Clinic hypnotist saves grooms honeymoon. Hear his story

Jason explain how hypnotherapy helps anxiety on TV

Watch Jason on Underdogs TV show

The D4 Clinic services are now available face to face in Dublin and online via pre-recorded and Zoom/Skype sessions.
We offer both personalised and pre-recorded clinical hypnotherapy sessions from Ireland to clients around the world for a wide variety of issues.
Most programs can be instantly downloaded or made to order to allow you to do them from the comfort of your own home.

The Dublin clinic is run by Jason O’Callaghan, a consulting psychologist specialising in clinical Hypnotherapy~hypnosis and behavioural science.
Jason is regarded as the leading clinical hypnotherapist in Ireland and mentioned as one of the most successful in the world.

He holds a Master’s degree from Trinity College in Applied Psychology, a BA (Hon’s) in Psychology plus qualifications in CBT and Counselling.
He is also a Certified Instructor with the world’s biggest hypnotherapy organisation, the National Guild of Hypnotherapy (USA).
He is the author of the bestselling motivational book “Get the Life You Deserve”.

Since 2012 The D4 Clinic has become nationally and internationally known as the leading clinical & medical hypnotherapy practice in Ireland

Today, we help clients around Ireland and the world.

SUCCESS STORIES

  • Dear Jason,

    Many thanks for your help at D4 clinic. I have now lost over 3 stone and feel so good. This picture of me is in my first pair of size 12 jeans in over 20 years. It is just amazing how it has worked. I now love my daily walk.Thanks again for all your help. I would have no hesitation in recommending the D4 CLINIC to my friends and colleagues.

    Breda Keating

  • “Hi Jason, how you doing. I am going great since we last spoke, down just 2 stone and finding I feel much better and have a lot more energy each day. Walking daily and listening to my stomach has made a lot of difference. My friend Kelly was recently in with you also after I told here about you and she is nearly down a stone already. So both of us are looking forward to a nice shopping spree soon. Thanks so much”

    FLO - Dublin 6

  • “I found Jason O’Callaghan and the method of hypnosis very beneficial for weight loss. In 3 months, I lost 3 stone and am delighted. The thing I loved most about it was that it seemed to act behind the scenes in my mind and make the whole process quite easy and achievable.”


    SAMMI - Dublin

  • Thanks all. Should have got the hypnosis done years ago. Flight was quite pleasant and hopefully will be the same on way back. Just shows the power of the mind. Thanks to d4 clinic and Jason O’Callaghan for making it happen for me. I would recommend a visit to Jason for anyone suffering a phobia to get it sorted once and for all.

    Ciara - Dublin

  • 46 year old Arlette started our program to lose over 3 stone and get back to her target weight so she could compete for Ireland in the world powerlifting championships this week. Congrats and good luck

    Arlette

  • Mum of two Melissa (39) from Dundalk,Ireland has lost over 4 stone in six months with our VIP gastric band hypnotherapy program.

    Melissa - Dundalk

CHANGE TODAY
Slimming & Weight loss
Weight loss success stories

Irish mum tells how hypnosis helped her to shed a massive five stone in less than a year

After seeing holiday snaps of herself, Dubliner Sharon decided something needed to be done.
This time last year Sharon Gill was feeling miserable. The 47-year-old Drimnagh woman had tried every diet under the sun but nothing seemed to work.

But now after undergoing a course of hypnosis at the D4 Clinic, Sharon has lost almost 5st without even trying.

“I went down to Jason in the clinic and since then I haven’t looked back.”

CONTACT US

Jason O'Callaghan

Jason is a trained psychologist. He holds a honours degree is Psychology and a Masters degree in Applied Psychology from Trinity College Dublin. For his Masters research he was named in the 2012 Trinity College Roll of Honor after he developed a stress reduction program for cancer patients. He is also qualified in Cognitive Behavioural Therapy (CBT) receiving his training from The Institute of Integrative Counselling and Psychotherapy (IICP). He holds qualifications in Counselling from National University of Ireland in Maynooth and is a certified member of the National Guild of Hypnotists (NGH)
Office Main Line: 086 7834952 Email:  [email protected]

The clinic operates strictly by appointment only

Disclaimer: Hypnosis is a therapy and like all therapies, results will vary from one person to the next

CONTACT US
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