Governmental and non-governmental organizations around the world are trying to shape socio-technical development, especially the use of information technology, for the benefit of people. They are developing ethical guidelines for the creation and evaluation of digital services. The discipline of Life Engineering must combine the knowledge of several disciplines, such as psychology, machine learning, economics, and ethics, so that technology serves people, i.e., contributes to well-being. Therefore, a solid understanding of quality of life should be the starting point, explaining the patterns of human behavior and their impact on well-being. Digital services of all kinds provide increasingly detailed digital twins and give us the opportunity to operationalize ethical principles.