24. You always serve dinner on your largest plates

THE RESULT: Your portions are bigger than you may think.

THE FIX: Downsize your plates. On a standard 8- to 10-inch dinner plate, healthy portions look like a meal. On a 12- to 14-inch plate, they look meager, so if you have a fill-the-plate, clean-the-plate approach, you’re likely to dish out (and consume) a bigger portion. A smaller plate automatically guides you to smaller portions.