I've discovered over the years that the simplest explanation is almost always the right one; and that hunger of one kind or another - desire, by another name - is the source of almost every sorrow.
Look underfoot. You are always nearer to the true sources of your power than you think. The lure of the distant and the difficult is deceptive. The great opportunity is where you are. Don't despise your own place and hour. Every place is the center of the world.