I can't tell you how many times, even in the last three weeks of being sober, I have had times, even whole workdays, where I was 100% sure I was going to drink, and actually planned out going to the store and all. I remind myself of that whenever I feel like I "need" to drink, because it helps my perspective to remember that 100% sure has no power... I can still say no.
I am so happy you posted here instead of going to the store or trying to handle this on your own. Post, post, post, every minute if you must!!