Buddha by Deepak, The Four Agreements and The Mastery of Love by Don Miguel Ruiz, What the Buddha taught, On the Toltec Path
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These are all grea books that help me to keep on track and sort of guide my spirit to proper understanding of how everything on the exteririor first formulates inside. On The Toltec Path is a good book, it deals with perception and how this 3d world is basically a dream we have made up. It talks about mastering you dream world to gain knowledge to highten your awareness in your waking state. It talks mostly of living your life through second layer (spirit) instead of first dimension (mind).