Death, so called, is a thing which makes men weep, And yet a third of life is passed in sleep.

Setting the two side by side is a way of loosening a fear rather than dismissing a loss. We surrender consciousness every night without alarm, and something in that comparison takes a little of the strangeness out of the larger surrender, at least as it applies to the one who dies. It says less about grief, which belongs to the people left, and that is a separate matter entirely.

If the fear of your own ending sits with you, this may be a useful thing to hold, and it works whatever you believe comes after, since it says nothing about what lies beyond, only that letting go is not wholly unfamiliar. What is worth attending to is the waking two thirds, which is the part you can still do something with.