Do you make a shopping list before going to the store? And if so, do you stick to it? Straying from the list may cause impulsive purchasing and forgetting necessary items, which can often cause you to spend more money.
Create a shopping list and stick to it.
Another tip, don’t go to the grocery store hungry. This may cause an increase in impulsive shopping! You know what we’re talking about, that box of Oreos® and extra bag of chips.