After you stop cold turkey, stop thinking about it. The Rambam (Hilchos Teshuva Perek 2 Halacha 2) says that a part of teshuva is removing the aveirah from your mind.
The Kotzker used to say that mikreh laylah happens most often on Yom Kippur night, because that’s when people think about all their past sins in graphic detail, to “do teshuva”.