I really don't know how much help I can be. I've been in similar situations as you before and what I did was gathered up whatever courage I had and put my ego and dignity behind me and I asked my bank for help. They consolidated some debt, reduced interest rates, and changed a few products to get my monthly fees to pretty well 0 dollars.
I cancelled my credit card, I sold my video games, starting working more hours, started planning out my food a month ahead and bought groceries accordingly. There was a time when I just ate rice, waffles, and multivitamins because it was cheaper.
Unfortunately, the art world is brutal uncaring--we are all a bunch of selfish people trying to claw our way to the top or catch a break. Your work has clean lines, good contrast--there is just a sea of people out there who aren't interested in anything that anyone does. You cannot control this. The only person you can rely on is yourself.
I can't do much in the way of helping you out financially, but--if you want help with budgeting, finances--these are things that are in YOUR control. And if I can help out in that way, just let me know and I'd be happy to see what I can do.
Good luck, and it gets easier.