Credit cards have become vital for many consumers, especially for travel-related expenses, providing convenience and rewards. However, they also come with risks that can lead to debt and negatively impact credit scores. Common mistakes include missing payments, which can drop your credit score by up to 133 points if late by 90 days, and the misconception that carrying a balance improves credit scores, which is false. In fact, research shows that high achievers maintain a credit utilization of just 7%. Paying only the minimum due can extend debt and increase interest payments, while neglecting to check statements may lead to unnoticed fraud or errors. Lastly, understanding fees and annual percentage rates (APR) is essential to avoid unexpected costs. By avoiding these pitfalls, cardholders can maintain a healthy financial profile and enjoy the benefits of credit cards responsibly.