Like Liv, I got caught up in CC debt in college to the point of only being able to afford the monthly minimum, which essentially means you'll never pay off the balance. I cut them up, paid all my bills (rent, elec, ramen noodles) at the first of the month, put as much towards the card as I could, then went without the rest of the month. Tough but good fiscal lesson.
My wife and I still use cards some, but usually pay them off every year when we sell the crops.