Relying on my mind to know when I'm hungry doesn't work. I convince myself to eat because it's been (fill in the blank) hours since I ate. Instead, I stopped watching the clock and let my stomach do the thinking.
My mind doesn't tell me when I'm hungry. My stomach does.
Eating when REALLY hungry works for babies, who are mostly at healthy weights. Even naturally slim people do this. Learn to listen to your body again!
This relates closely to Intuitive Eating. It means you only eat when hungry, but stop between satisfaction and hunger.