Quote from A Course in Miracles Text Chapter 2 - THE SEPARATION AND THE ATONEMENT.

T-2.V.5. The sole responsibility of the miracle worker is to accept the Atonement for himself . 2 This means you recognize that mind is the only creative level, and that its errors are healed by the Atonement. 3 Once you accept this, your mind can only heal. 4 By denying your mind any destructive potential and reinstating its purely constructive powers, you place yourself in a position to undo the level confusion of others. 5 The message you then give to them is the truth that their minds are similarly constructive, and their miscreations cannot hurt them. 6 By affirming this you release the mind from overevaluating its own learning device, and restore the mind to its true position as the learner.