August 21 is the day on the modern Church calendar set aside to recognize the great Pope Saint Pius X. While most moderns recognize him only as a few of the initials in the curious “SSPX” group, in fact he is a pope for the whole Church.
Pope St. Pius X recognized and battled modernism, the heresy of our day, fighting it in the Church. Had he prevailed, we almost certainly would not be fighting the battles we must today.
While it is a Monday, still you owe it to yourself to spend some time researching this great man, and understanding what he tried to do for you so all of this would not happen.