Hi Magellan, I did exactly the same thing as you: I made it to 16 days, threw it away for a few glasses of wine, didn't drink the next day, but I haven't been able to string more than a few days together since. And to be honest, this week I haven't even tried. I haven't had any hangovers or negative consequences per se, but the hope I was feeling about sobriety is quickly evaporating as I succumb every evening (and sometimes earlier). I have no doubt I will be back to square one in no time if I continue.
Sorry to make this all about me, but the bottom line is that I can relate completely to what you're going through. This sucks.