I'm worried about this too, it's so easy to be tempted off course!! Like Sharon, I'm planning to be good the days I can and careful the days I go off diet, I really need to make sure I get back on track straightaway after though and not get carried away with the feeling of being able to eat whatever I want!
i don't tend to get carried away with what food we have in the house but we have a big family and visit a lot of people from Christmas eve until Boxing Day and not being able to resist when im offered something is the tough bit for me. It's also my youngest daughters 4th birthday on the 29th so we are having two family parties to celebrate that!
just do your best x