Make good choices. Ask if you can have an extra vegetable instead of rice, potato or pasta & whole wheat instead of white bread. Most restaurant meals are larger than meals eaten at home, so as soon as a meal is before you, ask for a container to take home the leftovers. But, don't wait to see what is leftover. Immediately divide everything in half. Eat the half left on your plate & take the rest home. One exception is if the vegetable or salad portions are...(click title for more info)
...skimpy, you might eat more than half at the restaurant. Skip dessert unless fresh fruit is an option. For a special treat, get a light dessert but share it or take half home. Other options: margarine (or do without,) sugar-free jelly or syrup, lite dressing, Equal, milk (not cream,) etc.