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Empowering Clients to Change Their Lives For Over 20 Years

                                         Diane Guy, the founder of DG Psychotherapy, graduated from the School of Law & Social                                                       Sciences at Manchester University in 2003, with both an honours degree and a professional                                                     diploma, she spent several years specializing in Cognitive Behavioural Therapy and                                                                Motivational Interviewing. Behavioural analysis, risk assessments, sentencing proposals and                                                  court prosecutions were an every day part of her routine within the Home Office. Working through the cycle of change with mandated, high-risk clients who were often resistant to the process served to consolidate her belief that no matter how fraught with difficulties an individual's situation may be they can work through it all with the right support.


Recruited from overseas, she migrated to Canada in 2007 where she has spent the past seventeen years counselling clients through life's ups and downs in a variety of domains; forensic mental health, addictions, concurrent disorders, mood disorders, trauma and grief. DG Psychotherapy has been fully operational in Caledon as a private practice since 2018 and opened a second location in the heart of Muskoka in the summer of 2022. She has also spent several years working alongside Dr. Andrew Cooper at Caledon Clinic providing psychotherapeutic services to clients with treatment resistant depression, chronic pain management and PTSD within their cutting edge Ketamine Assisted Psychotherapy program.

DG Psychotherapy is registered to provide EFAP counselling for Stellantis (Fiat Chrysler Automobiles), is an accredited provider of services with many health insurance companies, has vast experience supporting First Responders and works directly with CAS (Children's Aid Society)

                                          Haley Doyle joined DG Psychotherapy in 2024. A newly Registered Psychotherapist (Qualifying)                                              with the College of Registered Psychotherapists of Ontario (CRPO) she brings with her a                                                        BA(Hons) Psychology from York University and a Masters degree in Counselling Psychology.                                                  Haley’s warmth, compassion, and honesty cultivates a safe space for clients to engage in                                                              self-exploration. Her client-centered approach involves working collaboratively to set                                                                    goals and move clients forward toward positive change. Haley supports individuals                                                                (14 years+), couples and families, and the 2SLGBTQ+ community. Her areas of focus include anxiety, depression, self-esteem and life transitions. Her educational background, mature approach and practical experience come together in perfect harmony to enable her to meet the promise of DG Psychotherapy to provide professional, qualified, friendly & effective therapy you can trust.

"Improving your well-being takes courage and hard work, and it is my hope that clients find therapy to be an opportunity for exploring new ways of seeing their life, and a safe space to recover, learn, and grow. I integrate trauma-informed care with existing evidence-based practices including cognitive-behavioural therapy, emotion-focused therapy, self-compassion, and The Gottman Method. Together we will identify tools to help you through your challenges in a way that is tailored to you"                                                                                                                                    

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