Reference: al-Hilyah – Volume 4, Page 251
‘Own ibn ‘Abdillaah ibn ‘Utbah said:
The concern & attention the servant [of Allaah] has for his sins, motivates [him] to abandon them. And his remorse over them is the key to repentance. And, the servant [of Allaah] maintains [this] concern & attention for the sins which he is afflicted by until [his concern & attention] becomes more beneficial for him than some of his good deeds.