" it is precisely the uniqueness of our existence in the world, the irretrievability of our lifetime, the irrevocability of everything with which we fill it—or leave unfulfilled—that gives our existence significance. But it is not only the uniqueness of an individual life as a whole that gives it importance, it is also the uniqueness of every day, every hour, every moment that represents something that loads our existence with the weight of a terrible and yet so beautiful responsibility! Any hour whose demands we do not fulfill, or fulfill halfheartedly, this hour is forfeited, forfeited “for all eternity.” Conversely, what we achieve by seizing the moment is, once and for all, rescued into reality, into a reality in which it is only apparently “canceled out” by becoming the past. In truth, it has actually been preserved, in the sense of being kept safe. Having been is in this sense perhaps even the safest form of being. "

― Viktor E. Frankl , Yes to Life: In Spite of Everything