Daily bread or stone?

Our Prayer Petitions
“Our Father,…give us this day our daily stone”
“…for our spiritual life as a whole, the ‘being taken into account’ or ‘considered’, matters more than the being granted. Religious people don’t talk about the ‘results’ of prayer; they talk of its being ‘answered’ or ‘heard’. Someone said ‘A suitor wants his suit to be heard as well as granted.’ In suits to God, if they are really religious acts at all and not merely attempts at magic, this is even more so. We can bear to be refused but not to be ignored. In other words, our faith can survive many refusals if they are really refusals and not mere disregards. The apparent stone will be bread to us if we believe that a Father’s hand put it into ours, in mercy or in justice or even in rebuke. It is hard and bitter, yet it can be chewed and swallowed. But if, having prayed for our hearts desire, and got it, we then became convinced that this was a mere accident – that providential designs which had only some quite different end just couldn’t help throwing out this satisfaction for us as a by-product – then the apparent bread would become a stone. A pretty stone, perhaps, or even a precious stone. But not edible to the soul.”
C.S. Lewis, Letters To Malcom (Fontana Books: London, 1966), 55.