Greed arises only because your present moment is empty, and to live in an empty moment hurts very much. To forget it you project greed into the future, thinking that tomorrow things are going to be better, a lottery is going to open in your name. But of course you have to wait for tomorrow, it cannot be just now - and tomorrow never comes. All that comes is always the present moment, which is empty. Greed is because we don't know how to live the present moment in its total richness.