You're right. Watch your back. The tiger (your addiction) is watching you. Day 8 is definitely a zone of risk. It's called the "pink cloud". An euphoric feeling that "all is well". And that wicked little voice inside a person saying, "It's all right. You just had a little too much to drink! It happens to everyone! Now you might reward yourself by having just one. To show your pals you're O.K. and that you're one of them. You can control it."
If you're an alcoholic you can't control it. You might think you can. You might have one or two drinks, go home and have nothing and say, "See! It was O.K." But you start back down that slippery slope, gradual at first, but if you've had a drinking history, getting steeper very soon, and then the big drop off. And a horrible climb back up. Some don't make it back.
If you hear that voice inside yourself try to remember that that voice is not your friend. Any more than the tiger at your back.
W.