Positive psychology studies the conditions that contribute to the optimal functioning of people, groups, and institutions. It studies "positive subjective experience, positive individual traits, and positive institutions... it aims to improve quality of life."
To Seligman, psychology (particularly its positive branch) can investigate and promote realistic ways of fostering more well-being in people and communities.
The works of Aristotle include elements of what is now called positive psychology
The first World Happiness Report was initiated by the UN General Assembly in June 2011.
Quality of life (QOL) is defined by the World Health Organization as "an individual's perception of their position in life in the context of the culture and value systems in which they live and in relation to their goals, expectations, standards and concerns".
The Economist Intelligence Unit awarded Vienna the most livable city in 2019 Global Liveability Ranking.