Prescription #1: Give God the greatest possible glory and honor Him with your whole soul.
What is the principle of contradiction? In a nutshell, it’s this: a thing cannot be and not be at the same time. Saint Thomas Aquinas shows that not even God can deny the principle of contradiction, the absolute law of the order of being, because it is impossible for God to will the absolutely impossible.
Regarding the immorality of contraception, Familiaris Consortio explains that "every action which, either in anticipation of the conjugal act, or in its accomplishment, or in the development of its natural consequences, proposes, whether as an end or as a means, to render procreation impossible" is wrong.
On October 7, feast of the Holy Rosary, we celebrate the victory of Lepanto. When Saint Pius V ascended to Saint Peter’s throne, Christendom faced perils perhaps unequaled in its history of continual conflict, not the least of which came from the agitated and violent followers of Mohammed.