But to avoid being heedless, it is good to consider the word of the Apostle, “I die daily.” For if we too live as though dying daily, we shall not sin. And the meaning of that saying is, that as we rise day by day we should think that we shall not abide till evening; and again, when about to lie down to sleep, we should think that we shall not rise up. For our life is naturally uncertain, and Providence allots it to us daily.
Saint Anthony the Great
Fathers in Iconography 