Interpersonal approaches are highly effective for relieving depression. Because relationships profoundly affect our well-being, positive changes in the ways we relate to others can lead to lasting relief from depression.
It is possible to gain freedom from dependence on alcohol or drugs. Often such reliance stems from specific deficits that occurred during early childhood... compounded by more recent life-choices. With work, it is possible to move away from use and move towards sobriety with enriched relationships.