In being true to the small voice within, you are being of service to others and to the world in the most profound way possible. You cannot know where that voice will take you, but in being willing "to save the only life you could save," you are affirming one of the deepest and most sobering truths of all: no one else can ever walk your journey for you. You alone can respond to your call.
As the human species awakens to itself as a collection of immortal souls learning together, care for the environment and the earth will become a matter of the heart, the natural response of souls moving toward their full potential.