By being an all around fun person who people want to know and be with.
Also, people should learn to vote responsibly. We can't blame the vehicle for hitting the tree when the driver put it there. You seem to want to cut down all of the trees, instead of educating the masses about the dangers they pose.
It doesn't work like that, if there is an incentive to vote in a specific manner people are going to vote this way.
Those trees you speak of bring nothing positive to the platform so why not cut them all down?
Educating the masses? Ok so there is this feature that you can earn money with if you upvote stuff but be careful, only use it to make little money do not abuse it. Yeah right :)