Once you've lost weight, your goal is maintenance. The complete avoidance of any food group is neither healthy nor effective. Each person's response to carbs, fats and proteins is unique. Some do better with more carbs than others. Your best initial approach is to start with high protein/low carb and experiment with different proportions of each while keeping your total calorie intake at or slightly below your daily calorie needs. This means you need to track the calories you eat (with an app like myfitnesspal) and the calories you burn (with a device like fitbit). It doesn't matter if the numbers are exact rather that your method of tracking is consistent. I recommend starting with 50% protein and the rest is a balance of unrefined carbs and healthy fats. Make 10% adjustments once in a while and see what happens after a few days.