Often the case is this: the signal we receive, is the one we send out. If want to change the world, we simply must change ourselves, as we are most sensitive to our own signal. As we interact in the world our energy is multiplied by a thousand human beings, and it can be either heavenly or terrifying to hear it from someone else.
To change the world, we must start with our own energies, perceptions, and viewpoints, and the rest will follow.