A Course in Miracles – Chapter 5: Healing and Wholeness – Introduction
T-5.in.1. To heal is to make happy. 2 I have told you to think how many opportunities you have had to gladden yourself, and how many you have refused. 3 This is the same as telling you that you have refused to heal yourself. 4 The light that belongs to you is the light of joy. 5 Radiance is not associated with sorrow. 6 Joy calls forth an integrated willingness to share it, and promotes the mind's natural impulse to respond as one. 7 Those who attempt to heal without being wholly joyous themselves call forth different kinds of responses at the same time, and thus deprive others of the joy of responding wholeheartedly.
T-5.in.2. To be wholehearted you must be happy. 2 If fear and love cannot coexist, and if it is impossible to be wholly fearful and remain alive, the only possible whole state is that of love. 3 There is no difference between love and joy. 4 Therefore, the only possible whole state is the wholly joyous. 5 To heal or to make joyous is therefore the same as to integrate and to make one. 6 That is why it makes no difference to what part or by what part of the Sonship the healing is offered. 7 Every part benefits, and benefits equally.
T-5.in.3. You are being blessed by every beneficent thought of any of your brothers anywhere. 2 You should want to bless them in return, out of gratitude. 3 You need not know them individually, or they you. 4 The light is so strong that it radiates throughout the Sonship and returns thanks to the Father for radiating His joy upon it. 5 Only God's holy children are worthy channels of His beautiful joy, because only they are beautiful enough to hold it by sharing it. 6 It is impossible for a child of God to love his neighbor except as himself. 7 That is why the healer's prayer is: