Remedy for the tarnished heart....

"There is a polish for everything that removes the Rust;

and the polish for the heart is the remembrance of Allah."

(Bukhari)

Ibn Qayyim al-Jawziyya (rahimahullah) said:-

“Doubtless, a heart grows tarnished like brass or silver, and its polish is in remembrance of Allah Mighty and Majestic, which may make it shine like a crystal mirror.

When one neglects the remembrance the heart tarnishes,and when one returns it shines.

Since the heart is tarnished by two things -- heedlessness and sin; it is polished by two things -- remembrance and seeking forgiveness.”