1. Don't let the foods on your plate touch. Some people do that anyway, because they have a weird OCD thing about it.
But the idea here is that if you don't let them touch, you're forcing yourself to take smaller portions. Because with HUGE portions, there's no way to avoid them touching.
2. Eat with your other hand. Maybe you've heard that one before, but it works because when you eat with your non-dominant hand, it takes longer. Which gives your body more time to feel full.
3. Don't use your cell phone while you're eating. Which is the only one on the list that requires some ACTUAL self-control.
The idea is that you eat more when you're distracted by something. Usually, that's your cell phone. But the same goes for watching TV. If you put your phone down and turn the TV off, you'll automatically eat less than you would otherwise.
4. Eat off a blue plate. Scientists aren't sure why, but for some reason it makes you eat less.