I worked in restaurant industry for years. I have no idea what real portions are anymore because what we buy is often several 100% more than what a serving is. My lack of reality about portions leads me to eat much more than is typical and leads me to feel starved when I'm eating right.
I purchased a portion plate from Curves, another from diabetic organization. I threw away all my larger portion bowls. I bought extra portion plates for kids, a new scale for food in the kitchen and serving cups from smallest to largest.