> understand your true nature as the supreme self

This is nonsense. Buddhism regards the "self" as not really a thing; rather, a bunch of aggregates that beings mistake for a thing. The idea of a "supreme self" is Atman, which nearly all Buddhists regard as illusory. The word generally occurs in Buddhist literature in the form "anatta", or no-self. Clinging to the idea of a self is considered a mistake, and the root cause of dukkha, or suffering.