A successful course of therapy helps restore a person’s emotional flexibility and empowerment so they can have greater agency in their relationships.
This is a great article explaining how therpay can help us re-frame some of our unhappy expereinces and resulting behaviours.
Our brains are always evolving unconsciously through our relationships. People who experienced painful relationships growing up have been trained to expect hurtful experiences with others. It takes a new type of relationship—in particular, a therapeutic relationship—to retrain the brain to expect more positive experiences, which is a big part of ultimately feeling better.
This is a good article in the New Scientist