I love this one.

Sometimes it’s the old words that work the best. Whenever I feel restless or lonely or afraid, I say it. Over and over again. Like a chant. How do I love thee?? How do i love thee?? Let me count the ways...

I love thee to the depth and breadth and height
My soul can reach, when feeling out of sight
For the ends of Being and ideal Grace.
I love thee to the level of everyday's
Most quiet need, by sun and candle-light.
I love thee freely, as men strive for Right;
I love thee purely, as they turn from Praise.
I love thee with a passion put to use
In my old griefs, and with my childhood's faith.
I love thee with a love I seemed to lose
With my lost saints, --- I love thee with the breath,
Smiles, tears, of all my life! --- and, if God choose,
I shall but love thee better after death.

And immediately the knot in my chest seems to loosen, and I can breathe again.