When I was younger, I wanted to save the world. It was hard. Then I had an epiphany*: the world did not need to be saved, it was OK the way it was (Be Here Now, and others). After that it was easier: I could seek to save the world without the stress of it having to be saved. I could save the world simply because I wanted to. Before and after this realization I continued to study the ways individuals influence the world.
*ephiphany: a usually sudden manifestation or perception of the essential nature or meaning of something