Talking about cakes... at some emotional level you have made the association that food makes you feel safe, secure, loved, accepted, comfortable, protected, rewarded, or reduces stress and boredom.
In some way your current weight is emotionally driven.
I bet your problems with food have to do with emotions like relieving stress, sadness, anger and other bad feelings. Do you think too much about food? Do you associate familiar events with foods? Do you eat when you had a bad day? etc? Well this is called "emotional eating".
