Your best investment? Paying off that debt

— -- Sure, stocks are much cheaper now than they were at the first of the year. So are houses.

But if you're carrying a lot of credit card or other debt, your best investment is to pay down that debt.

Think of it this way: If you invest $10,000 in a 10-year Treasury note, you'll earn 3.36% a year, or $336. After 10 years, you'll have pocketed $3,360.

Now, for the sake of comparison, let's say you have a $10,000 credit card bill, and the card charges a 19% interest rate. Suppose your card issuer requires you to pay 4% of your balance every month, so your minimum payment is $400.

If you pay your minimum each month (and assuming you must pay at least $10 a month), it will take a bit more than 15 years to repay your debt. If you pay that debt off now, over 10 years, you'll save $15,672 in payments and $6,204 in interest. Put another way: You'd earn $336 in interest from your T-bill in your first year. But you'd save an average $350 a month the first year by paying off your credit card — clearly a better bet.

Unfortunately, most people don't have $10,000 sitting idle; that's just one reason they're facing a mountain of credit card debt. Still, even if you pay down your debts gradually, you'll free up money for investing later. Just be careful not to dig yourself a bigger hole than you started with. Here are five ways to help get out of debt — and five traps that would probably bury you even deeper.

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5 ways to climb out of debt

1. Stop using your cards. It won't do you much good to pay down your debt if you keep adding to it. If you've arranged to have some recurring charges automatically billed to your credit card, see if you can have those bills deducted from your checking account instead. (Be sure to keep track, to avoid overdraft fees on your checking account.) Or see if you can eliminate those bills altogether.

2. Try to get a better rate. Some cards charge 30% or more, and anything you can do to reduce your rate is to your benefit. Start by calling your credit card company, says Gerri Detweiler, an adviser at Credit.com, a consumer website.