Prayer of Vocation and Trust (A Definite Service) by St. John Henry Newman

God has created me to do Him some definite service; He has committed some work to me which He has not committed to another. I have my mission—I never may know it in this life, but I shall be told it in the next. Somehow I am necessary for His purposes, as necessary in my place as an Archangel in his—if, indeed, I fail, He can raise another, as He could make the stones children of Abraham. Yet I have a part in this great work; I am a link in a chain, a bond of connection between persons. He has not created me for naught. I shall do good, I shall do His work; I shall be an angel of peace, a preacher of truth in my own place, while not intending it, if I do but keep His commandments and serve Him in my calling. Therefore I will trust Him. Whatever, wherever I am, I can never be thrown away. Amen.