Psychological well -being is a state of comfortable life and psychologically healthy . Wife living with in-laws are faced with a situation that is the overlap in the management of the household by law . The situation of conflict which triggers a variety of emotions . In the face of such a situation the ability to manage emotions and the ability to convey feelings , thoughts and opinions are what is considered affect psychological well -being of wife. The purpose of this study was to investigate the relationship between emotion regulation and assertiveness with psychological well-being, the relationship between the regulation of emotional and psychological well-being, and the relationship between assertiveness with psychological well-being in-law who lives with his wife in the village Plesungan. The population in this study was the wife living with in-laws in the village Plesungan. The type of research is a quantitative research. Sampling technique was purposive accidental sampling. This research used 55 people as sample. The instruments that were used were: psychological well-being scale, emotion regulation scale, and assertiveness scale. This study showed that there is a strong relationship between emotion regulation and assertiveness with psychological well-being (R = 0.614 , p 0,05). The contribution of emotion regulation and assertiveness with psychological well-being are 37,8 %. The effective contribution of emotion regulation on psychological well-being is 24,2 % and the effective contribution of assertiveness on psychological well -being is 13,6 %. Key words: psychological well-being, emotion regulation, assertiveness, wife living with in law
