America, we need to talk.We got news that US credit card debt closed in 2018 at an all-time high — $870 billion, to be exact. I’m sorry, what?! It’s time for a little tough love.While we’re always here to tell you which credit card — or cards — to get, we’ve also said this time and time again: Don’t get a credit card if you cannot afford to pay your bills, on time, in full, every single month.A credit card is not a magical piece of plastic (or metal) that gives you unlimited funds or monopoly money (as much as we wish that were true). It’s a savvy way to rack up points and miles for travel, but you should never get a credit card and buy things that you normally wouldn’t have, just for the sake of “getting the points.“Even if you’re (gasp) not using a credit card to rack up points and miles, the same thing holds true: Don’t spend money on your credit card that you don’t have. Creditcards.com Managing Editor Brady Porche also wants to remind you, “If you’re a credit card user and you want to avoid getting into debt, it’s critical to create a budget and stick to it. Avoid spending more with your card than you can pay off each month. Better yet, pay your balance down to zero each week if your budget allows it.“While we’re on the subject, now seems like a good time to reiterate our 10 commandments for travel credit cards.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Pay your balance in fullDo not miss a paymentDon’t cancel a card before you have opened a new oneDon’t cancel a card and lose your points and milesDon’t allow your rewards to expireDon’t miss out on a sign-up bonusTake advantage of category bonusesDon’t ignore cards with annual feesPursue retention bonusesDon’t pay foreign transaction feesThe bottom line? Don’t spend what you don’t have, and pay your bills in full every single month. Now let’s lower that number for 2019, shall we?