First, we have to forget the things we left behind, not wasting precious energy and time being overly concerned about them.
أَوَّلًا ،‏ عَلَيْنَا أَنْ نَنْسَى ٱلْأُمُورَ ٱلَّتِي تَرَكْنَاهَا وَرَاءَنَا ،‏ غَيْرَ مُبَدِّدِينَ طَاقَتَنَا وَوَقْتَنَا بِإِطَالَةِ ٱلتَّفْكِيرِ فِيهَا .‏