The word 'courage,' one of my favorite words, the root or the etymology of that word is 'cour,' which means heart. I think true courage is actually following your heart and not getting or succumbing to what other people's definition of what your life should be. Live your life.
The box jellyfish takes you into an area of what I'd call science fiction. You feel like you've been dipped in hot burning oil. You burst into flames.