Way to be... I was waiting for this. Your decision took guts so we know you have 'em. Post roll, promise not to use, do whatever it takes to get through the next second, minute, hour, day and then repeat.
You already know the fog is going to hit you. Just suck it up. The fog is just one long kick in the balls. It will suck at first, but it goes away. And when its over, you will feel great but none of us guys here forget what getting kicked in the balls feels like! So as you go along - embrace it but, don't forget what it feels like.
Congratulations. Let's quit together today.