To be blessed means to holy, and to be holy means to be set apart for God.
Fr. Mike reminds us of our calling to be holy, because, as Christians, we have been blessed by Baptism.
Being set apart doesn't mean to be physically separated from everything else. It means that something is dedicated to fulfilling God's purpose.
For example, if you've ever gotten your throat blessed during the feast of St. Blasie, then your throat is set apart for the purposes of God. That means when you use your voice to say something untrue or mean, you're violating the purpose of your voice, because it has been dedicated to God's will.
So, be blessed.
Make God’s will present in the world through your presence.