How do I avoid running my credit cards back up after I pay them off?

Build friction and a plan. First, stop carrying the cards; remove them from your wallet and from saved payment fields in browsers and apps, so a purchase requires a deliberate step. Second, keep the accounts open for the utilization benefit but treat them as inactive, maybe one small autopaid recurring charge to prevent closure. Third, fix the root cause with a working budget so unexpected expenses go to a sinking fund instead of the card.

Many people also switch to a debit card or cash for daily spending during the rebuild phase to relearn living within their income. Finally, build even a small emergency fund, since surprise expenses are the number one reason paid-off cards get maxed again. The behavior change matters more than the payoff itself; without it, the cycle repeats.