Unless we have the gift of prophecy, we can't really predict that things will turn out in a certain way. However, what I can predict from experience is that things seem to go in cycles. So like, if you're going through a negative obstacle course now, usually things change back and forth, so eventually the roller coaster will go back up again. (It seems like forever because the bad experience is so obnoxious.) Though we can't predict EXACTLY how something will turn out, we can say that it will change, based on this Biblical statement: "this too shall pass".