A Course in Miracles (also often called ACIM or perhaps the Course) can be a 1976 ebook by Helen Schucman. The underlying premise is always that the greatest "wonder" would be the act of just attaining a complete "awareness of affection's presence" in an individual's existence. (Only God is actual. https://www.youtube.com/channel/UCXpL4OXSmktqlP6_S5p5jIQ