To fix mistakes on your credit report, start by obtaining a copy of your credit report from all three major credit bureaus (using Nav Prime is a good option). Review each report carefully to identify any inaccuracies, such as incorrect personal information, accounts that don't belong to you, or errors in your payment history. To dispute errors, contact the credit bureau in writing, clearly explaining the mistake and providing any supporting documents. The bureau will investigate your dispute and contact the creditor for verification. Be persistent and follow up to ensure corrections are made promptly. Additionally, consider using certified mail for documentation and maintaining thorough records throughout the process. Regularly monitoring your credit reports and scores is crucial to maintaining an accurate credit history.