Forgiveness holds a critical role in the teachings of ACIM. Unlike traditional notions of forgiveness, which often require pardoning the perceived wrongdoings of the others, ACIM's forgiveness is an activity of issuing judgments and grievances presented against oneself and others. It is just a recognition that the observed sins and errors are grounded in the illusions of the pride, and through forgiveness, it's possible to see beyond these illusions to the natural innocence and divinity in most being. ACIM teaches that forgiveness is a way to internal peace and the key to undoing the ego's hold on tight the mind.

The Workbook for Students, comprising 365 instructions, is a practical manual designed to lead the student by way of a transformative process. Each lesson targets a particular topic, guiding the practitioner to apply the teachings inside their everyday lives. The a course in miracles protect a wide range of issues, including understanding, forgiveness, enjoy, and the nature of reality. The repetitive nature of the Book is intentional, reinforcing the proven fact that regular exercise is essential for the change of consciousness.

A Course in Wonders also presents the idea of the Holy Heart as a guide and intermediary between the egoic mind and the true Self. The Sacred Spirit is depicted as a supportive and nonjudgmental internal voice that helps persons reinterpret their experiences and perceptions in place with truth. ACIM encourages a continuing conversation with the Sacred Spirit, seeking guidance and wisdom in every areas of life.

Among the distinctive aspects of ACIM is its use of Religious terminology and symbolism, which might initially lead some to label it as a Religious text. However, the course transcends conventional religious boundaries and speaks to the common concepts of spirituality. ACIM attracts persons from all faiths (or none) to embark on a trip of self-discovery and internal change, emphasizing personal experience around dogma.