The main purpose of this study is to investigate the relationships between happiness and mental health (MH), socioeconomic status (SES), work-life balance (WL), family satisfaction (FS) and community satisfaction (CS). The variables of happiness are consisted of three components: life satisfaction, positive affect and negative affect. There are two elements for mental health: mental capacity (coping ability) and mental quality (kindness and altruism) while socioeconomic status variable is a composite indicator of education and income. We ...