Tsalikidou Aliki is a Psychologist - Psychotherapist and maintains a private practice in Nea Smyrni. She graduated from the Department of Psychology at the National and Kapodistrian University of Athens and has earned an MSc from the Medical School of the same university in the field of Mental Health Promotion - Prevention of Psychiatric Disorders. Professionally, over the past 16 years, she worked at KETHEA. She has been trained in Group Dynamics and has attended various training cycles in Systemic - Family Therapy. She has completed training in Counseling in the field of Substance Addiction at the Department of Psychiatry, University of California, San Diego. Additionally, she has received training in "New Therapeutic Techniques" at Amsterdam UMC (University Medical Center), as part of the Erasmus+ program (professional mobility in the healthcare sector). She has participated in numerous training programs for managing difficult patients, eating disorders, internet addiction, as well as special developmental disorders. She has collaborated with the Experimental Psychology Laboratory of the 1st Psychiatric Clinic of the National and Kapodistrian University of Athens and has participated in various research projects. From 2005 to 2006, she worked at the Children's Workshop, Center for Speech, Writing, and Behavior, providing Emotional Support services for children and Counseling for parents. From 2006 to 2022, she worked at KETHEA Diavasi, supporting both the addicted individuals and their families. From 2015, she held Unit Manager positions, initially at the KETHEA Diavasi Family Support Center and later in the Main Treatment Phase (Therapeutic Community).