Usually, no. Closing old cards can actually hurt your score. It lowers your total available credit and can shorten your credit history length, which are both important factors. Even if you don’t use an old card, consider keeping it open (just cut it up if you’re tempted to spend). A long history of an account in good standing is helpful for your score.

Your score likes to see that you can handle different types of credit responsibly. This is called your “credit mix.“ If you only have credit card debt, your score might not be as high as it could be. Having a mix—like a credit card, a car loan, or a student loan—that you pay on time shows you can manage various payments. But never take on debt you don’t need just for this reason.

A late payment can stick around for a long time—up to seven years! Even though its impact lessens over time, it’s a serious mark on your report. The good news is, recent history matters most. So, if you start paying everything on time now, you can begin to heal your score. Think of it like a scrape: it leaves a scar, but it hurts less and less as it heals, especially if you take better care of yourself moving forward.

Starting with just one card is the smart move. Learn to manage it perfectly first—paying on time and in full. Having more than one card can be helpful later to increase your total available credit, which can help your score. But more cards mean more bills to track and more chances to overspend. Only consider a second card after you’ve mastered the first one for at least a year.