The letter kills, but the Spirit gives life. Paul compares the old and new covenants: the letter of the law brings death, but the Spirit brings life. This is not a detail; this is the core.
Healing and wholeness do not come through rule-keeping but through the life-giving Spirit. When you are honest about your broken places, the Spirit may work there. Not every process is instant, but the direction is right: from the letter to life.