The secret to a tranquil heart

When the heart of a Mu’min is shaken with sins, with disobedience to Allah Most High, then the heart’s Sukoon (tranquility) is disturbed. The heart is in a state of restlessness and anxiety until the person sincerely repents. On sincere Taubah (repentance), the heart settles back in Allah Most High’s pleasure and once again enjoys its Sukoon.