Apostolos Peltekis holds a BSc in Psychology, an MSc in Cognitive Psychology from the Aristotle University of Thessaloniki and an MSc in Clinical Psychology from Leiden University. He is a certified therapist in Cognitive Behavioural Therapy from the Greek Association of Behavioral Research and Therapy in Thessaloniki and a member of the EABCT. He is also a certified adult trainer. Since 2015, he has been working at “Centre of Life”, a non government organization, providing psychological support to people living with HIV/AIDS. Part of his work is to educate the general population, opposing stigmatization, preventing HIV. During the past decade, he is teaching psychology modules at public Vocational Institutes and at Mediterranean College of Thessaloniki, at both undergraduate and postgraduate level. In the past, he has worked as a facilitator/coordinator of parent’s groups for the Youth and Lifelong Learning Foundation, the University of Thessaly, the Aristotle University of Thessaloniki, the Municipality of Kalamaria, NGO ARSIS and other sectors providing psychosocial services. He has published articles in academic and scientific journals and has made presentations at international conferences.