As an activist, you gotta pick something that's particularly interesting to you and go for it - because there's no shortage of things to do. And it's sort of a long-term commitment. Activism is for life.
There is a lake that one day refused to flow away and threw up a dam at the place where it had before flowed out and since then this lake has always risen higher and higher. Perhaps the very act of renunciation provides us with the strength to bear it ; perhaps man will rise ever higher and higher when he no longer flows out into a God.