Complex sentence: Breakthroughs are feats such as walking barefoot on glass, eating fire, bending steel rebar with the throat... without guidance and focus all can be dangerous but at the seminar they are metaphors for the other challenges life can present.
Split into simpler sentences: Breakthroughs are feats such as walking barefoot on glass, eating fire, bending steel rebar with the throat. Without guidance and focus all can be dangerous but at the seminar they are metaphors for the other challenges life can present.