Temptation is necessary to us to make us realize that we are nothing in ourselves. St. Augustine tells us that we should thank God as much for the sins from which He has preserved us as for those which He has had the charity to forgive us. If we have the misfortune to fall so often into the snares of the Devil, we set ourselves up again too much on the strength of our own resolutions and promises and too little upon the strength of God. This is very true.
(from the Book “The Sermons of The Cure of Ars”, TAN Books 2013, Page 122)