Getting back on track

The last year has been extremely hard financially! I work full time, but my monthly income is less than my monthly expenses. I am blessed that my office offers cash advances of up to $500 twice a year. This helps when I've gotten really far behind so i can catch up, but of course is hard to pay back at $50 per week. It sometimes feels like I'm working so hard to just barely stay afloat. I don't  make enough to get by on my own, but i make too much to qualify for any state assistance. There are times when we have to survive on ramen noodles for a couple days because there is literally nothing left at the end of the week. I feel badly, like I'm letting my son down. He of course doesn't mind, as ramen is one of his all time favorite foods. However, the mom in me feels like he needs more. There have been times when i skip meals, because there isn't enough food in the house and i want to save it for him. Usually someone will buy me lunch or something when i go to work, so its not like I'm not eating. Its during these times of financial hardships that i find myself at my low points. Its hard to imagine that just a year ago things were so very different. My Ex frequently found himself unemployed during our relationship, but he is one of those jack of all trades kind of men and was always able to find side work to help make ends meet. I can remember going to the store and spending $100 on groceries for the week and it not being a problem at all. Now i can barely afford $30, maybe $50 a week. So i buy only the necessities to get us by. I lay awake at night imagining that things will be so much better once i finish school. But that is even becoming a whole other problem. See, after my ex left my my van started having trouble. I begged him to look at it for me, but he blew me off and the transmission went out. I live an hour away from where i work. Thankfully one of my bosses lives close to me and i was able to get a ride with him most days, but he didn't work the same schedule as me and it became a problem some days to  get to work. One of the guys at work offered to let me use a car that his brother had left in the garage at his house for as long as i wanted. He said keep it a month or 5 years, i don't care. I was so grateful. Of course that car is old as well, having over 190,000 miles now it is also about to die. So getting to school is becoming a problem. What will i do if i cant get to school so i can finish my degree? I'm so frustrated today. I would give about anything to be able to just go get a new car, but there is no possible way to do that. I have another vehicle that, i am trying to fix. It needs new heads which is going to cost me $600 for the parts. That's more than i pay in rent. I don't know what I'm going to do. Talking to my coworker yesterday, she told me that her neighbor makes $65,000 per year. She was complaining that she was going to have to move out of her house because she couldn't afford it anymore. I wonder, do people like that really know what it is to struggle. I live on less than 1/3 of that income, maybe a 1/4 actually. I literally work to pay rent, electric, food, and gas to get to work and back. I have expired registration, and no insurance on my vehicle. I'm honestly just waiting to get pulled over and I can't even think about what would happen once that happens. I pray everyday that i just make it to work and back home. I've been looking for the last 6 months for a new job that's closer to home and i can make at least what I'm making now, or more. There is just nothing out there for me. So for now i just pray and keep doing everything i can to just get by. There has to be more to life than this......