Priorities. My wife doesn't understand how I can spend my last $70 on cat and dog food a week before payday. It's simple: Plenty of Cereal, canned goods, milk, cheese, hotdogs and/or bologna on hand? Enough gas in the tank to make it to payday? Honey, we should feed the animals, and the smaller bags are a rip-off.
Of course, personally it helps that my work has a free soda fountain and a sorta automat setup in the breakroom with a barcode/qr/app/account setup that actually gives a discount. I toss my lunch budget for the next two weeks on that every pay-day, and stop worrying about it.
Things get bad enough? All of my driver accounts on the ride-share apps are still active.