38. Wait 24 Hours Before You Buy Something
Before you jump into buying something in your Amazon cart, stop. Sit back, and wait 24 to 48 hours before you actually buy it. Ask yourself if you really need it, and try to go on with your day. Check back the next day. Do you still want that same item? More often than not, this would have been an impulse purchase on something that was not actually necessary for your life.
Instead of buying things immediately, let them sit on an Amazon wish list instead. After a while, you will either feel more justified in buying those things, or you will delete them. Depending on how much you tend to shop online, this could save you a few hundred, or maybe even a few thousand dollars over the course of a year.