The doer is the personal self and this self wants everything to be under conscious control. A Course in Miracles teaches us that, “Miracles are habits, and should be involuntary. They should not be under conscious control.” (ACIM, T-1.I.5:1-2.) There is no formula on how to undo the doer, it has to be under the Holy Spirit’s guidance. You cannot take personal responsibility for the seeming journey. You cannot as a person direct the undoing because the person IS the doer! Listening and following the guidance of the Holy Spirit and the practical application of the ACIM Workbook Lessons leads to experiences of peace and happiness, and that’s where the undoing of the doer occurs.
Often people say about the Course, “Ah, at last, a spiritual approach for intellectuals!” For different reasons, one might think that highly intelligent people, Christians, or even atheists may take to it, but the responses are not predictable. Emotions are sometimes overwhelming, too strong to want to feel. ACIM is not meant to cover over these, but to reveal them. Movies and music can help. In this way, life will seem fresh and like an adventure. Stuffing feelings or using the lessons as affirmations or mantras will only stunt your spiritual understanding.
Intellectualizing? Empty the mind and drop all concepts. The Holy Spirit is like a vacuum cleaner, sweeping out the mind of all its concepts. Education of the world is useless here. Soften into what the Buddha called “emptiness.” Are you being defensive? Then you are identifying with illusion. A woman took my book and tossed it in the garbage can; she thought I’d be very upset. I was unmoved. When you are not intellectualizing, you will feel mentally passive, no longer identified with the “do-er,” the doing mind.