Doing work which has to be done over and over again helps us recognize the natural cycles of growth and decay, of birth and death, and thus become aware of the dynamic order of the universe. "Ordinary" work, as the root meaning of the term indicates, is work that is in harmony with the order we perceive in the natural environment.
We may enjoy an experience of God that is so delightful that we may think all our troubles are over and we have at last completed the journey. Then after a few hours or a few days we find ourselves on the spiral staircase again and cannot even remember the pleasures of that transient experience of divine union. The whole purpose of this alternation is to bring the soul to the total transformation of love.
~ from FRUITS AND GIFTS OF THE SPIRIT by Thomas Keating