I find this is also a great way to decide if you even need it. I have a tab on my phone for stuff to buy. It collects so much crap I eventually deleted because the desire was fleeting.

I keep a paper list of large ticket items that I actually need so I can save up for them over time. I spend a lot of that time while saving shopping for the best option. I saved a lot while furnishing my house by buying secondhand because I had weeks and weeks to shop around.