Any essay by Robert J. Ellsberg is likely to be a gem. An essay by him about Dorothy Day is a can't miss - Five Years With Dorothy Day.
I was especially taken with this last paragraph --
Dorothy was a great believer in what de Caussade called 'the sacrament of the present moment.' In each situation, in each encounter, in each task before us, she believed, there is a path to God. We do not need to be in a monastery or a chapel. We do not need to become different people first. We can start today, this moment, where we are, to add to the balance of love in the world, to add to the balance of peace.
I'm going to put this here because it is something I need to remember --
Insist on yourself; never imitate. Your own gift you can present every moment
with the cumulative force of a whole life's cultivation; but of the adopted talent of another you have only an extemporaneous half possession. --Ralph Waldo Emerson