Happiness, life satisfaction, and subjective well-being are closely connected to quality of life. Accordingly, quality of life is defined based on different approaches. It can depend if the approach is objective or subjective or if the approach is negative or positive. It can also be defined according to its use, either in academic writing or everyday life. Thus, quality of life has no exact or universal definition (Susniene & Jurkauskas, 2009).Quality of Life (QoL) is usually referred to the definition of the World Health Organization (WHO) (1997) as the “individuals’ 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†and “a broad ranging concept extended in a complex way by the person’s physical health, psychological state, level of independence, social relationships, personal beliefs, and the relationship to salient features of their environment.
