When are you more likely to quit an addicting drug like coke; when you do it once in a great while at parties, or if you're doing it every night? Hopefully you don't do it at all, but your answer should be when it becomes a regular habit.

Make yourself the situation where you're a low availability, the coke you do when offered in the middle of the party, not the daily dosage you're planning to do the second you wake up in the morning. The more a woman catches herself getting your attention and time, the more she realizes this daily habit doesn't align with her goals and she should quit you.

BTW don't do drugs, kids. Drugs are bad.