Theory and practice of the confessional by Caspar Erich Schieler, Richard Frederick Clarke
1. Those may rest in perfect security who, being neither too strict nor too lax, experience no misgiving or anxiety on the care which they have devoted to the examination of their conscience.
2. If a man doubts whether he has been guilty of more or less carelessness and discovers after confession that he has omitted more sins than he has confessed, he must acknowledge himself guilty of gravely sinful neglect; if, however, he has confessed more sins than he has omitted, it may be assumed that he has not been guilty of great carelessness.
3. If a penitent's last confession was made one or two weeks before and he accuses himself of mortal sins, giving the number of times in quite a vague and doubtful fashion, e.g., I have committed sins against holy purity three or four times, there is a strong suspicion that he has been gravely careless in the examination of his conscience.
It should be noticed that if a penitent, from experience of his own weakness, is afraid that by a prolonged examination of his sins he will again consent to them, he may confine himself to a rapid glance at. them, though he knows that for want of further examination many will be omitted, since in any case the risk of committing sin must be avoided. A confessor must observe the same guardedness in putting questions on sins against the angelic virtue.as we shall see later.
If the penitent is troubled with scruples, it is better for him not to go so thoroughly into his examination of conscience, otherwise confession would become too burdensome, and experience shows that such penitents become only more confused, the more they examine themselves; indeed they should be forbidden any long and anxious attention to themselves.
Let the confessor impress upon worrying souls that the great thing for them is to have the wish to confess all, that God recognizes the good will, and that this is shown by praying for grace to make a good examination of conscience, and that even if a sin be forgotten without any fault it is remitted, and that the time between confession and communion should not be occupied with the recalling of one's past sins, but that the mind should be fixed on the future