Focus. Advent is about looking forward, calling us to focus on God's promises. So many things compete for our attention that it takes an effort to clear out the clamor and focus on what God has said. Life can have too much noise, too much distraction, for us to hear the words of God clearly unless we mute our worries for a time and listen.
For out of Zion shall go forth instruction,
and the word of the Lord from Jerusalem.
He shall judge between the nations,
and shall arbitrate for many peoples;
they shall beat their swords into plowshares,
and their spears into pruning hooks;
nation shall not lift up sword against nation,
neither shall they learn war any more.
(From Isaiah 2)