To repair your credit score you need to know what your credit history shows. In the first instance you need to get a copy of your credit report. Each year Americans are able to get a copy of their annual credit report for free from each of the major credit bureaus. There are three major credit reporting bureaus. These are Equifax, Experian and TransUnion.
You can do this online at annual credit report
Once you have received your credit report contact any lenders who have listed overdue accounts and do all that you can to get payments up to and any errors removed or out of date information updated. This is really important!
Get yourself organized! Stay on top of when payments are due to make sure that no further negatives are added to your report. Most lenders rightly treat your credit history as a major indicator of future behavior.