Hasan reported: Abu Darda, may Allah be pleased with him, said, “Whoever follows his ego in everything he sees in people, his sadness will be lengthened and his rage will not be healed.”
Source: al-Mudārāh al-Nās 27
عَنِ الْحَسَنِ قَالَ قَالَ أَبُو الدَّرْدَاءِ رضي الله عنه مَنْ يُتْبِعْ نَفْسَهُ كُلَّ مَا يَرَى فِي النَّاسِ يَطُلْ حُزْنُهُ وَلَا يَشْفِ غَيْظَهُ
27 مداراة الناس لابن أبي الدنيا