Catechesis: Sixth Petition

Such feeling, as long as it is against our will and we would rather be rid of it, can harm no one. For if we did not feel it, it could not be called a temptation. But we consent to it when we give it the reins and do not resist or prayer against it. Therefore, we Christians must be armed and daily expect to be constantly attacked.—LC III:108, 109

For he is an enemy that never stops or becomes tired. So when one temptation stops, there always arise others and fresh ones.—LC III:109

If you try to help yourself by your own thoughts and counsel, you will only make the matter worse and give the devil more space...But prayer can prevent him and drive him back.—LC III:111