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.
Unless we are creators, we are not fully alive... Remember, the root word of humble and human is the same: humus: earth. We are dust. We are created; it is God who made us and not we ourselves. But we were made to be co-creators with our maker.