Andrew began his professional career as a physiotherapist, and has worked in hospitals, rehabilitation centres and private practice, including overseas work. He soon developed an interest in the impact a person's psychological state has on their pain, particularly in the spinal area. He developed an interest in an holistic approach to people's issues, having observed treatment success being significantly affected by a person's stress and coping ability.

He left private practice and entered work involving case managing people with physical and mental health issues, helping increase their coping and assisting them back into employment. After conducting over 400 chronic pain assessments, he developed his own style of pain management counselling. He also encountered many cases of chronic fatigue and saw the fine line required to balance physical and mental/emotional energy.

His interest then turned to counselling and psychotherapy study to further understand the human journey through the various physical and psychological challenges that people encounter. He has been trained across a number of areas including Humanistic/Interpersonal Process, Psychoanalysis, Cognitive Behavioural Therapy (CBT), Relationship-Marital Therapy, Trauma therapy, as well as Brief-Integrated Therapy.

He has developed his own system of therapy called Self-transformation Therapy. This system of therapy has been developed over a number of years, and has been based on the psychological models developed in his two books - 'The Tree of Life' & 'The Middle Pillar'. These two books were written as one book, and then divided into a theoretical and experiential book. 'The Tree of Life' creates the framework for the human journey, while 'The Middle Pillar' describes how to create psychological balance for inner peace and harmony.

These two books are based on Kabbalah's 'Psychological Tree of Life' , which creates the framework for Self-transformation Therapy. These models provide a holistic framework for life's journey, integrating the management of stress, improving relationships and creating life fulfilment.