Remember that "left" has four letters and "right" has five letters.
Pachter writes:
Food is placed to the left of the dinner plate. The words food and left each have four letters; if the table is set properly, your bread or salad or any other food dish, will be placed to the left of your dinner plate. Similarly, drinks are placed to the right of the dinner plate, and the words glass and right contain five letters. Any glass or drink will be placed to the right of the dinner plate."
Left and right also work for your utensils. Your fork (four letters) goes to the left; your knife and spoon (five letters each) go to the right.
Also, think "BMW" when trying to remember where to place plates and glasses. The mnemonic BMW here stands for "bread, meal, and water" so remember that "your bread-and-butter plate is on the left, the meal is in the middle, and your water glass is on the right."
Source: "The Essentials Of Business Etiquette"