If you go to the store for a certain thing, then look for it was her and not go shopping "just to see". Do not take advertising flyers that you will be given work at the mall promoters, avoid advertising, do not look at ads "Sales". Buy only the things which were going.
2. Counting
Plan all purchases in advance, determine your budget. Decide in advance how much money plan to spend, and how much to leave. Make your decision before the trip to the store. If you do not know the exact price for your item, you can always view all prices on the Internet, because most popular shops have their own website.
3. Alternatives
Remember that even if the item is sold at a discount of 50%, you will save more if you do not buy it. If you need it for a couple of times, then it is better to borrow from neighbors or rent. If the item you need, you will learn the prices at other stores, because it is possible that you can buy much cheaper. Do not skimp on quality, but remember that the price and quality are not always linked.
4. Opinion
Ask the opinion of purchase of a product at the girlfriend or the second half. Any advice can affect your decision to purchase. Look at the reviews on products selected firms on the internet, read what people think of her surrounding. Learn all the arguments "for" and "against". If you can save some money by ordering from the internet thing, then why not take advantage?
5. I want
Locate the line between "want" and "need." Are improve your quality of life if you just buy this product? Imagine how specifically you use the product after purchase. Also be careful with additional proposals that sound pretty tempting, but often have to pay extra for them.
6. Objectives
Remember your financial goals. Think about what effect the purchase of this item on the financial perspectives. If you save up for a house, a car, or education for their children, think that more important to you - this purchase or specified purpose.