One of the many pathologies shared by overeaters is false signaling. We cannot trust our brains to send accurate messages to our senses. That's why anorexic people see themselves as morbidly obese when they look in a mirror, even though they're skeletal and contours of ribs are showing. And we're all different, though we share many common dynamics.
If you can't trust your perceptions, trust a scale and measuring devices like spoons, cups and prepackaged portions. Don't focus on just one thing such as a "full feeling." Your damaged mind is trying to sabotage your logical brain. You know the truth. Don't let one hazard snap a trap on your truth.
What does your scale say? Rely on that, trust the science. Counteract that failure message that you should feel full with an affirmation that teaches you that you're all right, healthy, beautiful.
If you're actually NOT losing any weight, see your dietician, doctor and surgeon.