Simon has 25 years expertise in psychotherapy, social and human services, education, services, and training as well as community outreach. Simon has a Doctor of Psychology (Group Psychotherapy) with the Professional School of Psychology (PSP). His portfolio includes a private practice known as The Psychotherapy Clinic both in Singapore and Bangkok, where he works as a Psychotherapist. He has taught as an adjunct lecturer at various institutions. Simon is also engaged as a resource speaker , conducting workshops, giving talks to schools and corporate organizations.