Duaa-At the time of difficulty when Sleeping

To be recited when having difficulty obtaining sleep
اللَّهُمَّ غَارَتِ النُّجُومُ وَهَدَأَتِ الْعُيُونُ وَأَنْتَ حَيٌّ قَيُّومٌ * لَا تَأْخُذُكَ سِنَةٌ وَلَا نَوْمٌ يَا حَيُّ يَا قَيُّومُ أَهْدِئْ لَيْلِي وَأَنِمْ عَيْنِي
"O Allah the stars have gone far away and the eyes are rested. You are Alive and Infinite, You do not slumber nor does sleep overtake You. Oh Alive and the Everlasting One, grant me rest tonight and let my eyes sleep (close).

(Hisnul Hasin)