Would you like to save the world from the degradation and destruction it seems destined for? Then step away from shallow mass movements and quietly go to work on your own self-awareness. If you want to awaken all of humanity, then awaken all of yourself. If you want to eliminate the suffering in the world, then eliminate all that is dark and negative in yourself. Truly, the greatest gift you have to give is that of your own self-transformation.
Lao Tzu, 4th-6th century BCE
Seems we were not being very good guardians of the world even back then. However his solution is quite simple: work on our own self-awareness, offering the greatest gift we have.