The personal finance internet is obsessed with deals: coupons, cashback apps, price trackers, flash sales. These tools are real, but they address the wrong problem. Spending less on things you actually need is secondary to not buying things you do not need.

The 48-hour rule for non-essential purchases. Before buying anything over $50 that is not on a pre-made list, wait 48 hours. Roughly 60% of impulse purchases evaporate during that window without any willpower expenditure. The desire passes because it was never deep.