"You've gotta give it away." What I take from this is the notion of self-surrender. You may be leading a materialistic and shallow existence, but at some point you may have to give it all away--to a spouse, a child, a lover, a Higher Power, etc. Bono references surrender often, going back to the War album up to the current SOI tour. I think he is a person with a very healthy sense of self/ego who is fascinated with the notion of giving it all away, laying it down for someone/something else. "If I wanna live I gotta die to myself someday," he sang on "Surrender".