The portion tools I actually recommend

Portion sizes are a skill, not a personality trait. Tools make the skill easier to learn.

A set of measuring cups and spoons takes the guesswork out of starches and fats. An oil spray bottle can cut the oil in a pan dramatically without changing how you cook.

A food scale is the fastest way to calibrate your eye — weigh your usual portion for two weeks and you will be able to estimate it accurately for life.

I keep the tools I use with clients in the online shop, so you can get the same set I demonstrate in consultations.