Habits, health, money and time. How to actually keep up with your whole life.
Impulse spending is not a character flaw, it is a design problem. Checkout is built to be frictionless and your worst weeks make you more vulnerable to it. Add a little friction, name your triggers, and track the small buys, and most of the impulse disappears.
Sleep loss degrades judgment, risk assessment and impulse control, the exact machinery you use to resist a purchase. That is why low-sleep weeks and high-spend weeks often overlap.