One of many central subjects of ACIM is the thought of forgiveness. The Program teaches that forgiveness is not only pardoning someone for their wrongdoings, but instead, it's the acceptance that there's nothing to forgive. It asserts that what we comprehend as wrongdoings are finally caused by our own misperceptions and projections. In flexible the others, we're, in reality, flexible ourselves. ACIM emphasizes that forgiveness is just a path to internal peace and liberation from the burdens of resentment and anger.

Another elementary principle of A Program in Miracles is the indisputable fact that the bodily world is definitely an illusion. It posits that our physical activities are unreliable signs of truth and that correct belief can just only be achieved by way of a shift in consciousness. The Class acim involving the "real life," which really is a state of peace and oneness beyond the product realm, and the "pride world," known by fear, separation, and conflict. According to ACIM, our principal purpose is to awaken from the desire of the pride world and return to the attention of our divine nature.

ACIM also presents the thought of the Holy Heart as helpful information and instructor within the individual. This spiritual existence sometimes appears as the origin of inspiration and knowledge, supporting people make possibilities that lead people nearer to reality and far from illusion. The Program teaches that through our willingness to be controlled by the Sacred Spirit's advice, we could access a greater knowledge of our function and the road to healing.

The Book for Students in A Class in Miracles consists of 365 lessons, one for each time of the year. These instructions are created to support pupils internalize the teachings and apply them with their day-to-day lives. They often contain meditative and contemplative workouts, affirmations, and insights on the ideas shown in the text. The goal of these day-to-day lessons would be to shift the student's belief and mindset steadily, major them towards a situation of true forgiveness, inner peace, and spiritual awakening.