That itch isn't you—it's the addiction. The addiction is trying to bring you back in, whispering in your ear, trying to engage you in a debate over whether one drink might help, or whether maybe just say eff it and try again next week, or maybe next month, when conditions will somehow be magically better. Don't listen to that voice. Don't argue with it. Just ignore it—go for a walk, eat a big meal, read newcomer posts on SR—do whatever you have to do until it subsides.
They are just feelings. They will come, and they will also go. You don't have to act on them.
You can do this. One day this will all be a memory. A better life is waiting for you.