“True repentance has to balance the wrongs of the past.  So a person should not become demoralized if he sees that his head is filled with desires and every kind of corrupt thought.  In fact, he is engaged in the process of righting his own wrongs of the past.

For now, instead of succumbing, he stands up against these thoughts and resists them.  In this way, he achieves true repentance, and he elevates the sparks of holiness which fell though his earlier abuse of the sacred covenant.”   ~ R’ Nachman of Breslov zt”l