Improve your creditworthiness by doing what the savviest borrowers do. By Andrea Browne Taylor, Online Editor Originally published April 10, 2015 Without even knowing it you might be doing things that are damaging your credit score, which affects not only your ability to borrow but also the interest rate you pay when you do borrow. So how do you identify and put an end to your bad credit habits? Simple: Start doing the same things as people who have excellent credit scores.See Also: 9 Secrets to Better Credit Here are three credit-boosting behaviors that will help bump up your score: Payment history is the top factor in most credit-scoring models. Payments that are 30 days or more late can quickly drag down your credit score – and it only takes one missed payment. Take this into consideration: 96% of people with the highest credit scores pay bills for loans and credit cards on time. Even if you can only afford to pay the minimum, always pay on time because that will have a bigger impact on your score than the amount you pay. Set up automatic bill payments so you never miss a payment deadline. The second most important factor in your credit score is how much debt you have; your credit utilization ratio is a big part of that. According to Fair Isaac, the company that invented the widely used FICO credit score, people with excellent credit scores use only 7% of their available credit, on average, while most consumers with lower scores have maxed out their available credit. You can see a significant increase in your credit score by paying down maxed-out credit accounts. Advertisement Lastly, don’t open and close credit accounts indiscriminately. People with excellent credit scores have an average account history of 11 years versus an average account history of seven years for those with lower scores. So opening several new accounts at once can shorten the average age of your credit history. And closing old, inactive accounts can hurt your credit, as well as take away your access to that available credit. There are additional steps you can take to improve your creditworthiness. Here are four more habits of people with excellent credit scores that you should adopt.