What is left after one has forsaken drugs and sex, and there is no god? Where do you go from there? That is the void through which I am currently traveling, in search of something, anything, to which I can devote my energy. The immediate concept that comes to mind is the path of the bodhisattva. Helping others, compassion, loving kindness, caritas.
Perhaps that is start.
"In the youth of a state arms do flourish; in the middle age of a state, learning; and then both of them together for a time; in the declining age of a state, mechanical arts and merchandise."
Francis Bacon