Ecclesiastes 3:12-13; Ecclesiastes 3:22

12 So I concluded there is nothing better than to be happy and enjoy ourselves as long as we can. 13 And people should eat and drink and enjoy the fruits of their labor, for these are gifts from God.
22 So I saw that there is nothing better for people than to be happy in their work. That is our lot in life. And no one can bring us back to see what happens after we die.