Its not like one meal -no matter how "bad" you are -is going to make you gain 20lbs back... you shouldn't be considering yourself on a
diet but rather a lifestyle change and restaurants, birthdays, etc are part of real life.. as long as you don't take the attitude that some do - well i screwed up this one meal so i might as well go completely nuts for 2 weeks -then go - enjoy and ge back to your "plan" the very next meal.