Mental well-being is the state in which person understands his or her aptness and can handle the stress of life, whereas decision making competency (DMC) is something in which an individual can make and take responsibility for fulfillment of commitment to appropriate decision in punctual manner. A simple decision making is combination of individual’s knowledge, experience and how they deal with the various problems in life. Moreover, mental well-being includes cognitive, emotional and behavioral response towards personal life of an individual. The correlation between mental well-being and DMC build resilience in adults. The research setting was D.A.V Institute of Engineering and Technology (DAVIET), Jalandhar, Punjab. Total 100 sample were selected with nonprobability purposive sampling technique to collect the data. A self-structured mental wellbeing scale used to assess the mental well-being among early adults and modified decision making questionnaire scale used to assess the DMC among early adults. The study concluded that mental well-being and DMC are directly prepositional to each other. Hence high mental well-being causes high DMC or vice-versa.