Pirqei Avot 2:21
לא עליך המלאכה לגמור, ולא אתה בן חורין להבטל ממנה.
Lo alekha ha-melakhah ligmor, velo atah ben horin lehibbatel mimenah.
You are not obliged to finish the task, neither are you free to neglect it.
We all face so many tasks each day, and there is never enough time to finish them all. Don’t panic! Keep going, keep trying to do what needs to be done, even though you know you'll never reach the bottom of your list. That is the only way to go about life.