What does the Bible say about encouraging oneself in the Lord?

In 1 Samuel 30:6, we see David, amid great distress after losing everything, encouraging himself in the Lord his God. This illustrates a vital principle in the Christian faith: true encouragement and strength come not from within, but from trusting in God's character and faithfulness. David’s reliance on the Lord highlights the necessity of looking beyond our circumstances to find hope and reassurance in His promises. Scripture gives us numerous instances where believers are called to remember God’s past faithfulness to bolster their current faith, as seen in Psalm 77:11-12, where Asaph resolves to remember the works of the Lord.