What is the Edna St. Vincent Millay poem that begins The courage my mother had?

The poem you're thinking of is called "The Courage That My Mother Had". Here is the full poem:

The Courage That My Mother Had

The courage that my mother had

Went with her to the grave;

She lived a life of poverty,

Yet never seemed to crave

The things that make for happiness,

Except a heart that knew

The love of God and the love of man,

And the love that's born anew.

And when at last the weary road

Had led her to the end,

She took her courage with her, and

Went out to meet her Friend.