For the most part, people who come to Bright Line Eating need to have boundaries around their food, and the most effective tool for this is the food scale. Some, who are less comfortable with weighing, find the “one plate” rule works best. If you like the idea of eating three meals a day, letting go of sugar and flour (which will help your brain heal tremendously), and simply eating one plate of food with no seconds, then you have a workable food plan. This fits perfectly within the Bright Line Eating framework.
You may feel more comfortable with the idea of implementing the Bright Lines when you can do a “one plate” rule for quantities and not worry about the composition or size of the meal as much. Some people succeed with this way of incorporating the four Bright Lines of sugar, flour, meals, and quantities.