"We can see too how much the Devil fears those who pray, since there is no moment of the day when he tempts us more than at prayer. He does everything he possibly can to prevent us from praying. When the Devil wants to make someone lose his soul, he starts out by inspiring in him a profound distaste for prayer.
However good a Christian he may be, if the Devil succeeds in making him either say his prayers badly or neglect them altogether, he is certain to have him for himself. If you wish to understand this even better, consider since when you have been unable to resist whatever temptations the Devil put in your way and since when you have left the door of your hearts open to the four winds--is it not since you began to get careless with your prayers, or have been saying them from habit, by routine only, or just to get rid of them, and not to please God?
Yes, my dear brethren, from the moment that we neglect them, we move with big steps towards Hell: we shall never return to God if we do not have recourse to prayer. Yes, my dear children, with a prayer well said, we can command Heaven and earth, and all will obey us."