How can I pay for a 4 year university in a wise manner?

Currently I’m studying at a junior college and am doing pretty well. But transferring, the next step for me, seems next to impossible with my financial situation. The situation is, I barely have income as well as when I do have it, it’s dedicated to credit cards, food and gas.

How can I afford tuition to a four year? More specifically I plan to go to SDSU for one school year the average tuition is about $6,578. So cut that in half per semester, and I need to achieve 60 units and average 12 units to be considered full-time.

Got any creative advice? Open to all possibilities.