Désiré-Joseph Cardinal Mercier (1851-1926) was Archbishop of Malines, Belgium from 1906 until his death. Besides the heroic leadership he demonstrated during World War I, Cardinal Mercier hosted the famous Catholic-Anglican dialogue known as the Malines Conversations, and obtained the establishment of the liturgical feast of the Blessed Virgin Mary, Mediatress of All Graces with its proper Mass and Office. His spiritual mentor was Blessed Dom Columba Marmion. Here, in his own words, is the daily practice he recommended:
I am going to reveal to you the secret of sanctity and happiness.
Every day for five minutes control your imagination and close your eyes to the things of sense and your ears to all the noises of the world, in order to enter into yourself. Then, in the sanctity of your baptized soul (which is the temple of the Holy Spirit), speak to that Divine Spirit, saying to Him:
O Holy Spirit, beloved of my soul, I adore You. Enlighten me, guide me, strengthen me, console me. Tell me what I should do. Give me your orders. I promise to submit myself to all that You desire of me and accept all that You permit to happen to me. Let me only know Your Will.
If you do this, your life will flow along happily, serenely, and full of consolation, even in the midst of trials. Grace will be proportioned to the trial, giving you strength to carry it, and you will arrive at the Gate of Paradise laden with merit. This submission to the Holy Spirit is the secret of sanctity.