From an article by Maria Popova @ The Marginalian, which I recommend. This has something happy and mournful about it,

LOVE AFTER LOVE
by Derek Walcott

The time will come
when, with elation,
you will greet yourself arriving
at your own door, in your own mirror,
and each will smile at the other’s welcome,
and say, sit here. Eat.
You will love again the stranger who was yourself.
Give wine. Give bread. Give back your heart
to itself, to the stranger who has loved you
all your life, whom you ignored
for another, who knows you by heart.
Take down the love letters from the bookshelf,
the photographs, the desperate notes,
peel your own image from the mirror.
Sit. Feast on your life.