Well, you know when you quit smoking you have to go cold turkey. No more hits of nicotine, no more "I'll just have one and then quit again tomorrow." The hardest thing for me when I quit smoking was the routine was no longer there and I missed it. The morning coffee and the first smoke of the day I missed the most. So: I switched up th routine. Instead of Coffee in the morning I switched to having a tea. Just that little switch of my routine helped me get over arguing with myself whether or not I should "just have one more and then quit again tomorrow."
Try a new routine. What is one thing you always wanted to do but didn't have the time to do? Now is a good time to finally get on it. Replace one habit (her) with another habit (something you've always wanted to do but haven't).
Just a thought.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion