I once had things set up too complicated and unnecessary. In addition to regular withholding for retirement, also had too much money taken out for Flexible health savings account (I based on someone's advice it was too much and lost some of the money), also had different automatic transfers for emergency fund and travel fund. We were getting low, so told hubby to use credit card for any purchases till I get paid. So, bounced a check, which caused a fee, which caused more refused transactions/fees. Almost $100 in fees. our electronic bank takes 3,4 days to transfer funds, so too late to avoid trainwreck. Same thing happens later that year(for lesser amount). Made me realize a) husband and I don't necessarily inform each other about every purchase, b) my husband STILL doesn't know the difference between a credit card and a debit card is (he thinks the bank debit card is a credit card, because it has a visa symbol on it).
So, I now keep an additional cushion in brick banking, allowing to overdraft from there.
But otherwise pretty close to paycheck to paycheck, because for the next 1-2 years will have increased expenses which will us up all our net pay, and previously because I don't like having a lot of money in my brick bank checking (gets no interest).
When I was dating my to be husband, he didn't have a checking account. He would just cash his checks and have the money around. So he did literally live paycheck to paycheck. There was times he would rummage around in his coin jar to buy a can of dogfood for his dog. Well, at least he wasn't in debt.