It can be amazing what can be achieved when someone is consumed by a selfless dream for the benefit of humanity. He will end up finding people who will buy his vision and fully throw their weight behind him.
The world is full of people who are yearning to see good prevail. They will waste no time to line up behind you if they are convinced about the goodness of your dream.
If you want to impact the world, your challenge is to conceive a sound dream that enhances the common good.
Then you articulate it in such clear terms that it will be well understood. If you do that and market it well enough, it will get across to the right people who will line up behind you.
The outcome will astound you.