One of the problems that I have every weekend is my eating. I tend to eat pretty well during the week and can tweak that if I want but on weekends I tend to eat pretty badly and inconsistently. Why do you think that is? Well the reason is a daily meal plan.
All major diets have a meal plan where they say to succeed you must eat this food at this time and eat this food at that time. No one questions this they just eat what they should.
I have my eating plan during the week right down to the individual food and time starting with a big glass of water in the morning and finishing with a snack at 8:00 in the evening while watching TV. On the weekend days I do not have any schedule, I get up when the kids wake me. I get dragged off the computer when the kids want breakfast and I hunt, just like any other guy, for snacks and cookies. If I ever want to make big changes to my caloric intake it would just be a matter of having a fixed schedule on the weekends until those new habits stuck.
If you are having some problems now with your eating look at your eating schedule for the weekdays. Is it good? Is there something that you would like to change? Do you go out for lunch too often? Once you have those five days sorted out you can work on the bigger battle which I believe for most people is the weekend schedule and eating