Source of happiness and sadness
“Adlerian psychology has the view that all problems are interpersonal relationship problems. Interpersonal relations are the source of unhappiness. And the opposite can be said, too—interpersonal relations are the source of happiness.”
Excerpt From: Ichiro Kishimi & Fumitake Koga. “The Courage to Be Disliked.” Atria, 2018-05-08. Apple Books.