The paper presents professional activities and the major works of an ambassador of the European Association of Clinical Psychology and Psychological Treatment (EACLIPT), Prof. Danutė Gailienė. Prof. Gailienė is among the most influential European clinical psychologists who contributed to clinical psychology training, research, and practice in former post-communist East European countries. Her entire career was dedicated to the development of clinical psychology, and through her work, Prof. Gailienė demonstrated how even in an oppressive and politically difficult environment, it is possible to keep the integrity and work up to higher standards.