Mr. Tolle is not diagnosing anyones thinking. He has analyzed the structure and content of the ego and is passing along his insights and experience. Krishnamurti did this, Jesus did this, Buddha did this, Socrates did this, etc.
Likewise, Mr. John Kanzius (no college degree), has not diagnosed anyones cancer, but he analyzed the mechanism of cancer combined with his experience with radio waves
Forum: "Cults," Sects, and "New Religious Movements"