I was addicted to sugar, 100%.

I took a quiz on a popular food psychologist's website to prove this to myself, and sure enough, my score was 7 out of 10 (1 being not addicted and 10 being super addicted). 7 wasn't the highest possible score, but it was high enough for me to confirm that my inability to eat just one cookie from the plate or one bowl of ice cream instead of the whole container, was the result of sugar addiction.