As Catholics, we believe the Church has the following four marks: one, holy, catholic, and apostolic. Jesus founded the Church to have these identifiers and the Holy Spirit continues to guide the Church into the perfection of them. They are there in our Profession of Faith at Mass.
When we were baptized we, too, were marked with these four identifiers. We are called to be part of this one, holy, catholic, and apostolic Church as it journeys to perfection. What am I doing to witness to this truth in my daily life? Would someone be able to look at me and see that I have become a marked person?