David Hoffmeister, a well known spiritual teacher and creator, has devoted his life to sharing profound insights drawn from the Training course in Miracles (ACIM), a self-study spiritual imagined system. His books supply a modern interpretation of historical wisdom, emphasizing forgiveness, really like, as well as illusion of the ego. https://www.amazon.com/Books-David-Hoffmeister/s?rh=n%3A283155%2Cp_27%3ADavid%2BHoffmeister