Surah Al-Isra Verse 25 - English Translation by Shabbir Ahmed
Surah Al-Israرَّبُّكُمۡ أَعۡلَمُ بِمَا فِي نُفُوسِكُمۡۚ إِن تَكُونُواْ صَٰلِحِينَ فَإِنَّهُۥ كَانَ لِلۡأَوَّـٰبِينَ غَفُورٗا
Your Lord is best Aware of your psyche. If you fulfill the needs of others, you grow your own personality. If you turn to His Laws, He will protect your "Self" from deterioration. (Ghufarah = Helmet and armor)