Gregory the Dialogist

As a servant earnestly desireth the shadow, and as an hireling looketh for the end of his work, so am I made to possess months of vanity, and I have numbered me wearisome nights. The hireling longs for his days to pass the quicker, that he may attain without delay to the reward of his toil; and so the days of man imbued with a knowledge of the Truth and of the things of eternity, are justly compared to 'the days of an hireling,' because he reckons the present life to be his road, not his country, a warfare, not the palm of victory, …

Morals on the Book of Job, Book VIII ↗

Thomas Aquinas

Therefore, since the whole position of Eliphaz is undermined by these arguments, Job intends to strengthen them and demonstrates them efficaciously from reason. For clearly, each thing rests when it attains its ultimate end. So once the human will has attained its ultimate end, it must rest in that and must not be moved to desire anything else. Our experience is contrary to this in the present life. For man always desires the future as though he were not happy with the things he has in the present. …

Commentary on Job ↗