How to end the long term credit card debts?

The Financial Conduct Authority (FCA) reported that 3.3 million people in the UK have long term credit card debts. In fact they are repaying less in principal than they are paying in interest and charges over a period of 18 months. According to the analyses of the FCA a customer with a £3,000 debt on a credit card with an annual percentage rate of 19% will be able to clear the debt within 20 years with paying as much in interest and charges as in