Don't try to not drink today. Just don't drink today. If that doesn't work, just don't drink at 8, and then... don't drink at 9. Then... don't drink at 10.
Then... go to bed. Voila! You made it a day!
I've only got 16 days, but I am going to make it to 17. And then 18. Maybe once I get to 3 months, I'll start thinking in terms of 'not this week'. But for now, just go today.