Unchangeable Future

What would happen if we knew the future? If we couldn't change it, but it was held irrevocably out to us, like a tantalizing sweet just out of reach. If we could see the sorrow and painful days that we will have to endure, would we be able to survive the struggles that we are fighting against right now? For, somehow when we come upon an obstacle we think we cannot master we are able to take the day minute by minute and overcome it. But if we could see it looming in the future, with the idea of it haunting every hour of the present, what then? Would we cower in its presents and stoop to the ground, unable to go on? I think I might, if I knew the day the worst was going to happen, and what I might endure.