Quote from A Course in Miracles Text Chapter 11 - GOD OR THE EGO.

T-11.II.2. Healing thus becomes a lesson in understanding, and the more you practice it the better teacher and learner you become. 2 If you have denied truth, what better witnesses to its reality could you have than those who have been healed by it? 3 But be sure to count yourself among them, for in your willingness to join them is your healing accomplished. 4 Every miracle that you accomplish speaks to you of the Fatherhood of God. 5 Every healing thought that you accept, either from your brother or in your own mind, teaches you that you are God's Son. 6 In every hurtful thought you hold, wherever you perceive it, lies the denial of God's Fatherhood and of your Sonship.