You'll probably have a limited amount of money to put toward credit repair each month. So, you'll have to prioritize where you spend your money. Focus first on accounts that are in danger of becoming past due. Get as many of these accounts current as possible, preferably all of them. Then, work on bringing down your credit card balances. Third are those accounts that have already been charged-off or sent to a collection agency.
Next, estimate your monthly spending habits for other expenses such as gas, groceries and entertainment. Create a limit, based on your income, of what you can spend in each of the different categories of expenses. For example, if you tend to spend $400 a month on groceries, try to stick to $300 a month on groceries by making changes like buying generic brands, using coupons, and resisting impulse purchases.