Ecclesiastes 4:4; Ecclesiastes 4:6; Ecclesiastes 4:16

4 Again, I considered all travail and every right work for which a man is envied by his neighbor. This is also vanity and vexation of spirit.

6 Better is a handful with quietness, than both the hands full with travail and vexation of the spirit.

16 There is no end of all the people, even of all that have been before them; they also who came after shall not rejoice in him. Surely this also is vanity and vexation of spirit.