Kostaki Maria is a Psychologist, graduate of the Department of Psychology at the National and Kapodistrian University of Athens, and holds a license to practice. She has completed her postgraduate studies in the program "Mental Health and Child and Adolescent Psychiatry" at the Faculty of Medicine of NKUA, where she specialized in issues related to childhood and adolescence. She specializes in Cognitive Behavioral Therapy through the training program she attended at the Center for Applied Psychotherapy and Counseling, where she further enhanced her expertise in adult psychotherapy. In the context of her continuous professional development in Psychology, she has attended training seminars on the analysis of children's drawings, administration of the WISC-V intelligence test, as well as other topics related to mental health. During her practical training, she worked in assessment and diagnostic centers for learning difficulties, such as KEDASY and the Child Psychiatry Clinic at the "Agia Sofia" Children's Hospital. For the past six years, she has maintained her private practice, conducting psychotherapeutic sessions with adults, adolescents, and children, addressing a wide range of mental health needs. Simultaneously, she collaborates with specialized therapy centers where she provides her services as a psychologist and holds counseling sessions with parents, as well as individual sessions with adults, children, and adolescents facing difficulties across a broad spectrum of disorders, including neurodevelopmental disorders, anxiety disorders, emotional difficulties, and behavioral problems.