Keep it up, 7 days is awesome. My only advice is to try and not worry about the "addiction-oriented beast" rearing it's head somewhere because you aren't there yet and it isn't happening yet.
Realizing that it may be a problem is a good thing but don't obsess over it or let it detract from your focus. To me, this type of situation is best addressed by remembering that this is done one day at a time. Keep it simple and keep it in the day!