Weekends = diet **** for me too. I'm kinda glad I'm not the only one experiencing this... Its so hard to actively cook and excercise when you want to bum out... and usually all the food is gone. Here are a few ideas I came up with:
A) Do weekly shopping on friday so you have lots of fresh veggies / fruits at your disposal.
B) Saturday morning - have brekkie and straight to the gym / workout to get it out of the way!!
C) Choose and execute at least one activity on the weekend that includes physical excercise (ie. marathon shopping, hike in the woods, walk on the beach, game of tennis, etc)
D) On friday decide what "un-changeable" events need to occur and plan your weekend around that (like cooking healthy food, excercise, etc.)
Hopefully this will turn into a weekendly routine.
E) Put a motivational sign / poster on your ceiling so its the first thing you see when you wake up!
F) Set alarm clock on the weekend!!! (sleeping in throws my diet completely out of wack- i'm not suggesting to wake up at 5am, but 9am rather than waking up at noon- cause then you might excercise!!!)
I hope this helps someone out there!! I'm going for it this weekend...