Use different food. If your diet is complex carbs with lots of fiber, you probably won't be hungry after ingesting a decent amount of calories. Most people don

Use different food. If your diet is complex carbs with lots of fiber, you probably won't be hungry after ingesting a decent amount of calories. Most people don't do that (myself included), so instead I add in a lot of protein, which also fills me up reasonably quickly on a per-calorie basis. It's not simply calories that fill you up, so choose the right calories. I can eat a thousand Calories of chocolate chip cookies and still be hungry, but a thousand calories of protein bars or broccoli will usually fill me up reasonably well. (Actually, I've never managed a couple thousand Calories of just broccoli. I usually do 200-300 Calories of broccoli, but that alone does as much as all those cookies for satiety, so I can then eat a filling-but-sane second dinner and be full+healthy.)