1. Use smaller plates and bowls.
2. Replace short, wide glasses with tall, narrow ones.
3. Use smaller spoons.
4. Throw out the lolly jar (or replace it with a fruit bowl).
5. Place healthy foods at the front of the refrigerator, and less healthy foods at the back.
6. Repackage foods sold in large packages into small containers.
7. Always put food into a plate or bowl, so you can better see how much you are actually eating. Never eat straight from the package.
8. Snack only at the table, and only on a clean plate.
9. Put everything on your plate before you start eating, and don’t go back for seconds and thirds.
10. When serving your meal, try dishing out 20% less than you think you might want before you start eating. You probably won’t miss it.

Perhaps the easiest way to change your behaviour, is to change your environment.

[Hat tip to Wansick.]