Psalm 61
A prayer from "the ends of the earth" when the heart is faint: lead me to a rock higher than I am. It admits we can't be our own foundation. It closes with a prayer for the king, whose throne is guarded by chesed and faithfulness, and a vow to sing day by day.
"From the ends of the earth I call out to You whenever my heart is faint. Lead me to the rock that is higher than I." (Psalm 61:2)