Most of us put a great deal of times into work, not only because we have to work so many hours to make a living, but because work is central to the soul's OPUS. We are crafting ourselves -- individuating. Work is fundamental to the OPUS because the whole point of life is the fabrication of the soul.
When you no longer have expectations, the unexpected kindness of others and small acts of consideration become like "sweet manna from heaven." The feeling that rises spontaneously within one's heart at such times is true gratitude. When one is accustomed to kindness, one can lose the feeling of gratitude. One must constantly return oneself to the spiritual starting point of no expectations.