A positive trait is an internal aspect of an individual that draws him/her to other people. Some of these aspects include kindness, generosity, optimism, etc. A positive trait is usually developed by the person himself. There are four criteria used to define positive traits (Neff et al, 2017). These criteria are examining if the person's traits increase or lower their happiness. In most cases, positive traits make a person happier than a negative trait. Eudaimonism. This states that positive traits are known for enhancing the mental health of a person, catalyzing good inter-personal relations, and steering an individual's success in times of challenges. Cultural/religion reflection and stability. Behaviors that are termed as virtues such as humility, love, forgiveness, etc. are associated with religiosity. These are a reflection of positive traits. Consistency. The consistency of a person's behaviors are used to define their traits as positive or negative.
Neff, K. D., Rude, S. S., & Kirkpatrick, K. L. (2017). An examination of self-compassion in relation to positive psychological functioning and personality traits. Journal of research in personality, 41(4), 908-916.