Like Elijah, you might be discouraged because your service seems fruitless or because some spiritual goal seems unattainable.
فَيَهْوَهُ يُقَدِّرُ تَعَبُّدَنَا وَأَمَانَتَنَا لَهُ وَلَا يُقَيِّمُنَا عَلَى أَسَاسِ مَا أَنْجَزْنَاهُ .‏