Considering the amount of money, and that you should definitely keep a cash cushion in the bank, I'd pay off half of it and continue paying as much as you can in monthly payments, and stop charging more than you can pay off each month.
?? Huh? What grown adult is forced to do these things? Even at college age of early 20's, that's still a kid in my book.
I don't see the need though, I mean who doesn't understand that it's a problem to spend more than you earn or a loss to pay interest on an accumulating debt vs gaining interest on an investment? If someone can't do math at least well enough to realize that, I guess they should keep failing at high school and would be taking classes as an adult still, but should have the easy ones like PE, drama, theatre out of the way and be taking math again and again.