Here is the prayer that Fr. Looker mentioned in his sermon this morning.  It has been ascribed to St. Ignatius of Loyola.

Teach me, Good Lord, to serve You and You deserve;
To give and not count the cost;
To fight and not heed the wounds;
To toil and not seek for rest;
To labor and not ask for any reward
Save that of knowing that I do Thy will.  Amen.