Trust me, I went crazy with the plastic money right out of high school. Living at home, working part time and going to school. No bills to speak of. Charge it up, month or 2 goes by, pay it all off. Do that a couple of times and they up your limit. By the time I got married at 24, I had close to 50k in cc debt. All of a sudden, wife pregnant, married, had rent and utilities to pay, my check didn't stretch that much.
I am now 38 divorced and haven't had a cc in almost 20 years. Mortgage is my only debt to speak of. (Parents had to help with that loan) 2002 Tacoma paid off(bought new at 18% interest. That sucked)
Pay the credit card off fast. Then hide them someplace and forget about them. If you need an emergency flight home, or a major vehicle repair, then use them. Do not cancel them, because no credit sucks almost as bad as bad credit.