Most of our difficulties, our hopes, and our worries are empty fantasies. Nothing has ever existed except this moment. That's all there is. That's all we are. Yet most human beings spend 50 to 90 percent or more of their time in their imagination, living in fantasy. We think about what has happened to us, what might have happened, how we feel about it, how we should be different, how others should be different, how it's all a shame, and on and on; it's all fantasy, all imagination. Memory is imagination. Every memory that we stick to devastates our life.