Indeed, Tawba is the Treatment of our ailing heart.
Have you ever thought whether your Tawba Sincere or not?
Allah Taala gave the vivid answer to this question: See Sura Nahl: 119. He says there (Meaning):
Those who ignorantly committed sin then did Tawba and corrected their Deeds; Verily your Lord is is Very Merciful and Kind after Tawba and Reformation.
The point: ‘corrected their Deeds’ is the condition of Pure Tawba. If one has committed sins and sincerely repented, the sign of his repentance will be definitely in this Deeds; he will be caring about his correction and reformation.
O Allah! We are your slaves. Indeed, we are very weak. We want to reform. We want to return to Your Path – Be steadfast! Please guide us. Keep us steadfast on Your Path with Sincerity and Grant us Pure Tawba! Ameen