If you make a blunder which brings a cross upon you, whether it be inadvertently or even through your own fault, bow down under the mighty hand of God without delay, and as far as possible do not worry over it. You might say within yourself, "Lord, here is a sample of my handiwork." If there is anything wrong in what you have done, accept the humiliation as a punishment for it; if it was not sinful, accept it as a means of humbling your pride. Frequently, even very frequently, God allows his greatest servants, those far advanced in holiness, to fall into the most humiliating faults so as to humble them in their own eyes and in the eyes of others. He thus keeps them from thoughts of pride in which they might indulge because of the graces they have received, or the good they are doing, so that "no-one can boast in God's presence.
--St. Louis de Montfort, Letter to the Friends of the Cross