When you pray, go to your inner room, close the door,
and pray to your Father in secret.
And your Father who sees in secret will repay you.
Matt. 6, 6
St. Sister Faustina about prayer
(Selected parts of the Diary of St. Faustina Kowalska)
A soul arms itself by prayer for all kinds of combat. In whatever state the soul may be, it ought to pray. A soul which is pure and beautiful must pray, or else it will lose its beauty; a soul which is striving after this purity must pray, or else it will never attain it; a soul which is newly converted must pray, or else it will fall again; a sinful soul, plunged in sins, must pray so that it might rise again. There is no soul which is not bound to pray, for every single grace comes to the soul through prayer (Diary 146).
Let the soul be aware that, in order to pray and persevere in prayer, one must arm oneself with patience and cope bravely with exterior and interior difficulties. The interior difficulties are discouragement, dryness, heaviness of spirit and temptations. The exterior difficulties are human respect and time; one must observe the time set apart for prayer. This has been my personal experience because, when I did not pray at the time assigned for prayer, later on I could not do it because of my duties; or if I did manage to do so, this was only with great difficulty, because my thoughts kept wandering off to my duties.
I also experienced this difficulty: when a soul has prayed well and left prayer in a state of profound interior recollection, others resist its recollection; and so, the soul must be patient to persevere in prayer. It often happened to me that when my soul was more deeply immersed in God, and I had derived greater fruit from prayer, and God‟s presence accompanied me during the day, and at work there was more recollection and greater precision and effort at my duty, this was precisely when I received the most rebukes for being negligent in my duty and indifferent to everything; because less recollected souls want others to be like them, for they are a constant [source of] remorse to them. (Diary 147).
I learned how much we need perseverance in prayer and that our salvation often depends on such difficult prayer (Diary 157).