Planning your weekly meals before you shop helps you stock up on items you really need, and keeps you from buying unnecessary items on a whim. We've certainly found in the times we haven't prepared ourselves before supermarket shopping, we are more likely to go way over our budget.

For some people sitting down and carefully writing a weekly meal plan before they shop works well. Or alternatively, thinking of your favorite and most commonly used recipes, checking your stocks in the pantry and fridge, and then shopping for the missing ingredients.