The key to changing the world is recognizing the source of your external perception. As Gandhi echoes, you must 'be the change you wish to see.' You can think about this on a personal level, related to your body and life or, go deeper, to focus on the impersonal, to recall the origin and nature of true leadership, and grow into a living example of that.
As it happens, ancient leaders in Great Earthly Civilisations saw and governed from a holistic perspective. True leaders were not ego-driven but functioned based on a strong heart-mind connection. Everything early leaders did was seen through the activated Third eye or heart centre. Many people in the the modern Age have forgotten how this feels, what it is in practice. The downfall of Great Civilisations can be traced back to ego taking control. The cause of the Fall of Atlantis, and disintegration of Great Civilisations that grew from dispersed Atlantean survivors, illustrate this well. (The wisdom of Atlantean survivors is felt to be reflected in ancient Greece, Egypt, South America, Mayan/ Toltec Mexico, Tibet, and other places, some of which have mysteriously disappeared in ways unrelated to egoic control)
Encouragingly, the global trend is to recognize what humanity is doing collectively in not working. The nature of interest and desire to act related to the environment, economic and governing systems, are all shifting. New kinds of collaborations and partnerships are arising that did not exist before. New interaction is being explored and timeless wisdom is being rediscovered.
Come what may, the key to changing the world guides one to the authentic message of transcendence and unity that echoes through ancient traditions and works. The moment is arising where it no longer makes sense to denounce anyone or entertain negativity. Every being of wisdom knows the life-breath intimately. Awareness of the life-breath united with the upward breath, together with insight into Self, creates the most desirable world.