Quote from A Course in Miracles Text Chapter 4, Section 5 - This Need Not Be.

I have said that you cannot change your mind by changing your behavior, but I have also said, and many times, that you can change your mind. When your mood tells you that you have chosen wrongly, and this is so whenever you are not joyous, then know this need not be. In every case you have thought wrongly about some brother God created, and are perceiving images your ego makes in a darkened glass. Think honestly what you have thought that God would not have thought, and what you have not thought that God would have you think. Search sincerely for what you have done and left undone accordingly, and then change your mind to think with God's. This may seem hard to do, but it is much easier than trying to think against it. Your mind is one with God's. Denying this and thinking otherwise has held your ego together, but has literally split your mind. As a loving brother I am deeply concerned with your mind, and urge you to follow my example as you look at yourself and at your brother, and see in both the glorious creations of a glorious Father.

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