I got into the same cycle a couple years ago with a payday loan place. I ended up having to file bankruptcy.
I do the paycheck to paycheck thing too. It's just hard trying to support yourself these days, no matter what kind of job you have.
Have you tried a credit counseling place? Sometimes they can talk to your creditors and arrange lower payments. Maybe that way you won't have to keep borrowing money.
Good luck...I sympathize.
Candy