When your credit rating is good and you have decent income, banks and credit card companies love to grant you loans/line of credit and issue you credit cards. When you have those credit facilities available, it would be difficult to resist from using them.
Since banks and credit card companies do not charge the same interest rates on the funds you borrowed, and if you cannot afford to pay the bills in full when they are due, you need to prioritize your payments to avoid paying high interest.
There are loans or credit cards that bear interest rate up to twenty nine percent per annum or even more especially those secondary lenders. Primary lenders are banks and trust companies.
If you do not prioritize your payments you will get stuck on paying high interest rate, and you cannot get out of debt quickly, for the bulk of the amount you pay would be applied on the interest.
To prioritize your payments you have to do your homework. Before paying any bill you have to look at all your bills closely and do two things: first, check if all the charges on your bills are accurate, to be sure that you are not paying on amount you did not purchase or borrowed; and second, know the interest rate charge on an outstanding balance for each bill.
Then, pay your bills according to interest rates charge by your lender. Pay first a loan or credit card that bears the highest interest, and pay last a bill that bears the lowest interest in that order.
Though prioritizing payments of your bills saves you from paying too much interest, a better way is not to use your credit cards with high interest rates, better still is to cancel them.