LPT: When shopping online, let the item sit in your cart for awhile before purchasing it
Ideally overnight or longer, and sleep on your decision. This helps reduce impulse purchases. There are exceptions, including necessities and things that you planned to buy beforehand.
Obviously if you don't have an issue with impulse spending this won't apply to you, but many people do, and this helped me a lot a few years ago when I was in college and had a spending problem. Now I probably buy stuff a couple times a year and they're all planned purchases, and I think this strategy helped a lot with that (along with being addicted to investing and buying ETFs instead of buying junk lol but that's a whole different thing) #entertainment