https://www.theatlantic.com/health/archive/2015/08/life-stories-narrative-psychology-redemption-mental-health/400796/

According to one study, highly generative people—that is, people who are caring and committed to helping future generations—often tell stories  about others who helped them in the past.

But agency sure does. It makes sense, because feelings of helplessness and hopelessness are classic symptoms of depression, that feeling in control would be good for mental health. Adler did a longitudinal study of 47 adults undergoing therapy, having them write personal narratives and complete mental-health assessments over the course of 12 therapy sessions. What he found was not only that themes of agency in participants’ stories increased over time and that mental health increased, and that the two were related, but that increased agency actually appeared in stories before people’s mental health improved.

Adler has noticed two themes in people’s stories that tend to correlate with better well-being: agency, or feeling like you are in control of your life, and communion, or feeling like you have good relationships in your life. The connection is “a little fuzzier” with communion, Adler says—there’s a strong relationship between communion and well-being at the same moment; it’s less clear if feeling communion now predicts well-being later.

Other common narrative structures seen in many cultures today are redemption sequences and contamination sequences. A redemption story starts off bad and ends better—“That horrible vacation ultimately brought us closer as a family”—while a contamination story does the opposite—“The cruise was amazing until we all got food poisoning.” Having redemption themes in one’s life story is generally associated with greater well-being, while contamination themes tend to coincide with poorer mental health.