Wait until the bill comes due, then pay it off in full, every month, on time. It will take many months of doing this the right way before you start to see a rise in credit score, but that's how it's done. It sounds like you're already off to a bad start by maxing it out in one week. If you can't pay it off in full by the end of the month, then you are spending too much and you need to either cut back your spending or get a better paying job. Many people are just stupid about it and pay the minimum or don't pay on time, and so end up paying more due to added fees/interest for screwing up, plus end up more and more in debt.