I know what you're feeling. I'm in the same position. With student loan payment coming up and investing in starting a business. I'm also feeling the strain.
Basically, we are spending no money except on things that are a need. We had to really look at what was a need and what is a want. In our society, many people skew that line, as we did. This is what helped us get in the mess we are in. Hopefully you have a lot of already aquired things to provide free entertainment so you don't need to go out.
I'm also looking for a second job to help make ends meet. This isn't feasible for everyone though. I've done it before in the past and it is tought, but you have to do what you have to do to pay the rent.
I wish you luck and as my grandma tells me on the phone (and she's seen hard times)...this too shall pass, family and friends are the most important thing, and don't stress because that isn't going to help anything but make you sick.
I will be interested to see what other people say. Because I'm not smart with finances (obviously).
I would love to have some options that doesn't include declaring bankruptcy down the line.