6. Switch Seats At The Dinner Table
The human mentality works such that, when people see that they can easily get second helpings, they usually do.
A study performed by Cornell researchers, who examined the eating habits of patrons at a Chinese buffet, noted that the people who sat facing the buffet line weighs more than those who sat facing the door.
The same principle goes when eating at home or at a party; sit or talk facing away from the serving area.