People who market products are very smart people! They get us at the ‘gut’ level where it is hard to say “no”. Beware of sales. Don’t be tempted to buy 2 of something because they are 1/2 off. Also be careful of buying in bulk just because the price seems right. Clutter is most often times caused by too many items.
Before buying ANYTHING be sure to ask yourself if you need it, have another one similar, can really afford the item, have space for the item. It is often a good idea to walk away and make the decision a few minutes later.
Practice delayed gratification and thinking ahead.