I would think it would be just fine for you to have couple fun meals per week where you don't worry about anything and just enjoy. For the rest of your diet, avoid crappy oils, high fructose corn syrup, and most grains (rice is likely fine if you don't have a weight problem). Because you are young and healthy, just avoiding the standard american fast food and junk food diet will keep you far ahead of most of us.
Eats lots of meat, veggies, fruits, nuts, eggs, butter, cream, olive oil, and other fats most of the time. Eat pizza, cheeseburgers, candy and cake in moderation without any guilt or negative thoughts about it at all.
Using low lectin/nightshade free primal to control autoimmune arthritis. (And lost 50 lbs along the way )
You should not count calories. Just eat until you are full and exercise because it's fun or transportation for you or whatever. Eat more meat and go out for pizza and ice cream once in a while.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 157.5 x 2