This is incorrect.You cannot decide when to take the secured deposit back-only the credit card issuer can do this.Also, shredding a card is a bad move as creditors will lower your credit limit or even cancel your card if it is not used somewhat regularly.The end result of this will be one less line of credit and a lower credit limit (which can make it harder to keep your utilization low),thus resulting in a lower credit score.

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.