Let us remember the devil labors hard to disturb us at the time of recollection in order to make us abandon it. Let him then who omits mental prayer on account of distractions be persuaded that he gives delight to the devil.
Alphonsus LiguoriHe would be guilty of mortal sin, because he exposes himself to the danger of grievously offending God. Hence, before he acts he must lay aside the doubt; and if he has not hitherto done so, he must confess it, at least, as it is before God. But the scrupulous, who have doubts about everything, must follow another rule: they must obey their confessor. When he tells them to conquer their doubts, and to act against scruples, they should obey with exactness; otherwise they will render themselves unable and unfit to perform any spiritual exercise.
Alphonsus LiguoriAll souls in hell are there because they did not pray. All the saints sanctified themselves by prayer.
Alphonsus Liguori