About Guidelight Psychology Gold Coast

Peter Doyle
Founder & Psychologist

An endorsed Counselling Psychologist and Organisational Psychologist, Peter founded the Guidelight Psychology practice in Southport in 1994, expanding into Brisbane in 2011.

Under Peter's skilled and caring leadership, our Gold Coast Psychologist Centre has been able to help thousands of individuals, couples, families and businesses for nearly 25 years.

Peter finds it particularly rewarding to help his clients find solutions, and gain results, across all types of people and performance problems.



Dianne Doyle

BHSc Nutritional Medicine

Dianne is a Gold Coast Nutritionist, and also a:

  • qualified Aromatherapist;
  • qualified Masseuse;
  • certified Food Coach;
  • past lecturer with Weight Watchers.

Dianne has enjoyed coaching hundreds of clients to achieve their health and nutrition goals, and shares her experience, recipes, and other information at the Food Prescription website


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Cecile Grant, Psychologist

BA Hons

I am a registered psychologist who has worked for 35 years across private and government sectors in various clinical, forensic and organisational roles.  

As a result of this experience, I am able to assist individual clients - adolescents, adults, and elderly - in the following areas:

  • Mood disorders, including anxiety, stress, depression, adjustment issues;
  • Mental health and dual diagnosis (intellectual disability, substance dependency, criminal offending)
  • Substance dependency and other addictions;
  • Anger management;
  • Personal issues, including building confidence, self-esteem, assertiveness;
  • Grief and loss;
  • Acute stress reaction and post-traumatic stress disorder; and
  • Rehabilitation from accidents, and work anxiety and depression. 

I am also experienced in working with people with autism, intellectual and cognitive impairment presenting with complex social problems and challenging behaviours.

My current interest is in developmental neurobiology and understanding the impact that early-life stressors, such as disrupted attachment, abuse and neglect, can have on the brain's structure and function.  

As a clinician, my therapeutic approach combines evidence based frameworks, together with a healthy dose of common sense, while my aim is to empower my clients to face adversity and develop resilience, believing in their own ability to cope and achieve positive life outcomes.

To book an appointment with Gold Coast Psychologist, Cecile Grant, please call our Gold Coast Psychologist Centre on (07) 5527 0123.


Stephanie Kalanj-Mizzi, Provisional Psychologist

BSc, PG Dip Psych

Stephanie is a provisionally registered psychologist with the Australian Health Practitioner Regulation Agency, offering counselling, coaching and psychological services at Guidelight Psychology Gold Coast.

Working from a holistic, person centred philosophy, Stephanie supports individuals, couples, children, and families to become stronger, communicate better and manage worries more efficiently.

Her areas of special interest include:

  • anxiety, depression and stress;
  • LGBTIQAP+ issues and gender questioning;
  • trauma and PTSD;
  • family and relationship counselling; and
  • psychometric testing - intelligence and achievement for children and adults, PTSD, Attention Deficit Hyperactivity Disorder (ADHD) and Autism Spectrum Disorder (ASD), for a fee as testing is not covered by Medicare or Gold Coast Primary Health Network funding models.

Stephanie is currently a PhD candidate with Monash University.

To book an appointment with Stephanie Kalanj-Mizzi, please call our Gold Coast Psychologist Centre on (07) 5527 0123.


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Sarah Garrett

Sarah Garrett is a registered psychologist with experience working within counselling and organisational settings, in:

  • government departments;
  • non-government bodies;
  • the corporate environment;
  • and private organisations.

She works with children, adults and families to address a variety of issues including stress, anxiety, depression, grief and loss, low self-confidence, relationship difficulties, parenting, and behavioural challenges.


Roz Erdelyi

An experienced psychologist, with a professional background in Job Network counselling settings, Roz has helped clients with a diverse range of personal, lifestyle and psychological wellbeing issues. 

Through her consultations with numerous individuals and also in small group coaching sessions, Roz has developed a toolbox of diverse and effective intervention approaches. She has a particular interest in supporting her clients with strategies and techniques to help them with resolving resolve past emotional concerns, as well as goal setting difficulties.

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Khia Hemming
Office Manager

Khia is the wonderful Office Manager and friendly receptionist at our Gold Coast Psychologist and Counselling Centre.  She will handle all your booking and accounting enquiries, together with any general enquiries you may have. 

Khia came to join Guidelight Psychology over 5 years ago, after moving from New South Wales where she had over 20 years of experience as a legal secretary.  She also has experience in the fields of IT and childcare administration.                                                        


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Karin Jansma
Health & Wellness Consultant

Karin was first drawn to yoga, pilates and group fitness 13 years ago, when she learned of its many benefits, and became a certified yoga teacher and pilates instructor in 2013. 

Currently Karin is studying Public Health at Griffith University with a focus on Environmental Health, Climate Change and Sustainablity. A woman of many talents, Karin is also the current Muscle Mania (Natural Body Building) Ms Model Australian champion. 

As a busy mother of 3, Karin believes in the power of yoga and physical fitness to create positive change in mind and body, through encouraging strength, focus, balance, flexibility and openness. 


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