Abstract
As a temporary emotional situation and a relatively stable state of being happy (subjective happiness level), happiness can be considered. In fact, people with high subjective happiness level think more positively than others.There are many factors with potential positive or negative effects on happiness such as: the (dark and milky) chocolate, Yoga, outdoor group walks in the natural environments, personality, social exclusion, negative emotional feelings, normative and subjective oral health status, socioeconomic factors, leisure time program, training like skills for coping with stress, increasing marriage satisfaction, improving economic status, and religion.Due to different related factors affecting on each person, it is not an easy task to clarify the methods of raising happiness in the communities . Each part of the world has its own culture and traditions, resulting in the fact that there is no identical way to make happier people. It is recommended to have several studies on happiness worldwide to investigate the specific policy for each region.