Besides paying your bills regularly and on time, the single most important thing you can do so show that you are a good credit risk is to known what's in your credit report. Studies have shown that many credit files contain errors that can harm your credit rating, leading to rejections when you apply for loans, insurance or even a job. The errors range from simple human error to being mixed up with a similarly named person. It’s essential that you check your credit files and monitor your cre.