So, here is the seventh day. I actually feel great today - upbeat, productive, and so on. I'm not taking that for granted - I know the pangs and the craves and creeps will come back in some form, but today I feel good. I feel proud of myself - not in an arrogant way, but for being resolute and erasing something harmful from my life.
I wanted to say, it's something I've noted a lot of other people saying too - this time really does feel different. I tried to quit before, but I don't think I truly wanted to. Now I truly do, and having this forum has been such a great help - it stops you feeling isolated, like you're going through the whole thing alone. It's amazing to see so many people all supporting each other, through the best and the worst of the whole process.
Thank you to everyone!