Transactional analysis (TA) is an established method of humanistic psychology. It offers concepts for understanding human thinking, feeling and action, and provides us with a constructive approach for dealing with ourselves and others. TA uses everyday language that is easy to understand, so even complex matters can be clearly described. TA is helpful and proven to work in situations which depend on personal contact. Transactional analysts work as consultants and organization developers, in schools and adult education, and as psychotherapists.