I've heard about all the est stuff, but never met anyone that's done it. Certainly, from what I've heard people say about it, it certainly seems brutal.
The concept that we are 100% responsible for what goes on in our lives is certainly one that's taught at landmark today. However, I have not heard anyone say that a person is responsible for their illnesses, tragedies etc.
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Large Group Awareness Training, "Human Potential"