Someone once asked George Müller:

“What is the secret of your service for God?”

Müller answered, “There was a day when I died, utterly died, died to George Müller, his opinions, preferences, tastes and will – died to the world, its approval or censure – died to the approval or blame of even my brethren and friends – and since then I have studied to show myself approved only unto God”

On the first evening of a summer holiday Müller asked, “What opportunity is there here for service for the Lord?”

His companion answered, “But you have just come from continuous work. Isn’t this a time for rest?”

Muller replied, “Now that I am free from my usual labors, I must be occupied in some other way in the service of God; to glorify Him is the object of my life.”

-George Müller, as recorded in Delighted in God by Roger Steer (Christian Focus Publications, 1997), 227.