Ecclesiastes 11:8-10

Indeed, if a man should live many years, let him rejoice in them all, and let him remember the days of darkness, for they will be many. Everything that is to come will be futility. Rejoice, young man, during your childhood, and let your heart be pleasant during the days of young manhood. And follow the impulses of your heart and the desires of your eyes. Yet know that God will bring you to judgment for all these things. So, remove grief and anger from your heart and put away pain from your body, because childhood and the prime of life are fleeting.