After every night, day occurs, and that is inevitable. Nature is designed in a way, that no matter how stormy, how cold the night, there will always be a morning. It is a metaphor of our human experience. We can go through days of misery, hopelessness and grim, but eventually brighter happier days will follow. So everytime we are in a difficult experience, it is important we remember that better days will follow, this will make the whole experience a little easier to deal with.