What can be said about happiness regarding epochal and cultural overlaps? What about happiness today? These questions are the focus of attention in the present paper, in which a historical-systematic analysis is to be performed.Neither in the past nor in the present can a uniform view or understanding of happiness be determined, as the question of happiness can be approached at various levels. Such observations are the starting point of a multidimensional theory of happiness, saying that it is impossible to deal with happiness in a one-dimensional way. The German word for happiness, namely Glück, contains the meanings of incidental luck, makeable fortune and inner well-being. The latter includes both a dimension related to the inner world and a religious-transcendent dimension. True happiness is then achieving success in life, bearing in mind its three dimensions. It refers to a successful life that takes physical, mental, psychological and metaphysical elements into account. Furthermore, every consideration of happiness has to include basic requirements that are worth striving for, even if their mere possession does not guarantee happiness or a good life. These fundamental conditions of health, security and freedom can contribute to success in life and encourage real happiness. In contrast, their absence or failure to appear makes it more difficult to achieve true happiness, but it does not exclude this possibility in principle. Consequently, the conditions of joy are an integrative part of real happiness. They open the scope in that true happiness and therefore success in life can develop to their full extent.