You can strengthen others by relating experiences you have enjoyed while serving God. King David prayed for opportunities to do so.
٤ أَيُّ سُؤَالٍ يُمْكِنُ أَنْ يَطْرَحَهُ ٱلْمَسِيحِيُّ ذُو ٱلْخِبْرَةِ عَلَى نَفْسِهِ ،‏ وَلِمَاذَا ؟‏