When the Prophet ﷺ woke up at night for prayer, he started with this -
وَاهْدِنِيْ لِأَحْسَنِ الْأَخْلَاقِ لَا يَهْدِيْ لِأَحْسَنِهَا إِلَّا أَنْتَ وَاصْرِفْ عَنِّي سَيِّئَهَا لَا يَصْرِفُ عَنِّي سَيِّئَهَا إِلَّا أَنْتَ
Transliteration
Wahdini li ahsanil-akhlaaqi, la yahdi li ahsanihaa illa anta wasrif anni sayyi'ahaa laa yasrifu anni sayyi'ahaa illa anta
Translation
Guide me to the best of manners for none can guide to the best of them but You. Protect me from bad manners for none can protect against them but You.
Want a clean heart? Ask Allah for good character. This Sahih Muslim dua keeps you away from bad habits. It shows you the beautiful path of kindness every day.
Allahumma ahdini li ahsanil akhlaq is the best. This masnoon dua asks Allah to show you good character and push away bad habits.
Yes. Sahih Muslim 771 has it. This authentic dua was used by the Prophet ﷺ to ask for the best morals.
Yes. Allah knows your heart. But try to learn the Arabic words - it's very good for you.
No fixed time exists. The Prophet ﷺ said it in prayer. You can also say it anytime you want to improve your akhlaq.
Yes. This dua for good manners asks Allah to protect you from bad deeds. When you say it, you trust Allah to remove bad akhlak and give you kindness instead.