Psychodynamic therapy is the oldest of the modern therapies. (Freud’s psychoanalysis is a specific form and subset of psychodynamic therapy), and so relies on a theory of human development and interaction.
It involves looking into events from the past and the affects those events had on you, as a way of gathering information and insight into why you behave in certain ways in the present.
Psychodynamic therapy is designed to help patients explore the full range of their emotions, including feelings they may not be aware of. By making the unconscious elements of their life a part of their present experience, psychodynamic therapy helps people understand how their behavior and mood are affected by unresolved issues and unconscious feelings.