Ecclesiastes 2:21-23 NLT - 21 Some people work wisely with knowledge and skill, then must leave the fruit of their efforts to someone who hasn’t worked for it. This, too, is meaningless, a great tragedy. 22 So what do people get in this life for all their hard work and anxiety? 23 Their days of labor are filled with pain and grief; even at night their minds cannot rest. It is all meaningless.
Ecclesiastes 8:15-17 NLT - 15 So I recommend having fun, because there is nothing better for people in this world than to eat, drink, and enjoy life. That way they will experience some happiness along with all the hard work God gives them under the sun. 16 In my search for wisdom and in my observation of people’s burdens here on earth, I discovered that there is ceaseless activity, day and night. 17 I realized that no one can discover everything God is doing under the sun. Not even the wisest people discover everything, no matter what they claim.
Rhythm - the flow of your life, the routines and habits, the quantity of obligations and events and the distance between them