Should I quit my job?

I work about 7 hours on Thursdays, then 12 hours on Saturday and another 12 on Sunday. I am 18, WAS about to go to college, but I was depending on a loan to go, buy got denied for it. So Plan B is to wait a year, and save up money to go. It's only 18k...I think I can manage that. But not with this job. I get paid 7.55 an hour. Do you think i can find better?