Your being willing to rid your heart of any ill will that you may have will be good for your heart.
فَيَنْبَغِي أَنْ نَبْذُلَ قُصَارَى جُهْدِنَا لِنَتَخَلَّصَ مِنْ كُلِّ مَشَاعِرِ ٱلضَّغِينَةِ وَٱلْغَضَبِ ٱلَّتِي نُكِنُّهَا لِلْآخَرِينَ .‏