I learned that when we confess, we are opening up the wound so that He can heal us, truly heal us. No more 12 steps to 'self care', no more band-aid solutions that eventually lead to infection and spread into other areas of life. God wants the matter settled, once and for all so that we can move on to the next course in our spiritual growth.
This is important to understand. We were not saved by the blood of Christ to stand silently in the back. We were saved so that His works can be done through us, so that others may be saved as well, so that our old ways become dead to us and we can wear with honor The Armor of God.
So, it attacks itself. Since the disease is non specific on what it will attack, it has a very high range of things it will attack.