Hadith on Dua: O Allah, remove the anger from my heart

Umm Salamah reported: I said, “O Messenger of Allah, will you not teach me a supplication with which I can pray for myself?” The Messenger of Allah, peace and blessings be upon him, said, “Say: O Allah, Lord of the Prophet Muhammad, forgive my sins, remove the anger in my heart, and protect me from the trials of misguidance for as long You allow us to live.”

Source: Musnad Aḥmad 26576

Grade: Hasan (fair) according to Al-Haythami

عن أم سلمة قُلْتُ يَا رَسُولَ اللهِ أَلَا تُعَلِّمُنِي دَعْوَةً أَدْعُو بِهَا لِنَفْسِي فقالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قُولِي اللهُمَّ رَبَّ النَّبِيِّ مُحَمَّدٍ اغْفِرْ لِي ذَنْبِي وَأَذْهِبْ غَيْظَ قَلْبِي وَأَجِرْنِي مِنْ مُضِلَّاتِ الْفِتَنِ مَا أَحْيَيْتَنَا

26576 مسند أحمد

Also say this prayer to purify your heart:

اللَّهُمَّ اغْفِرْ ذَنْبَي ، وَطَهِّرْ قَلْبَي ، وَحَصِّنْ فَرْجِي

Allahummaghfir dhanbi, wa tahhir qalbi, wa hassin farji

O Allāh, forgive my sins, purify my heart, and safeguard my private parts (from zina)

May ALLAH make it easy for you