Please give me a piece of advice

Let's say I'm L. I'm 21. I'm the eldest in a large family. Last year I dropped out of university because of lack of money. And it's too painful for me. Till this, I worked in a factory as a seamstress. Then I didn't work for 4 months, now I work in a silver jewelry store. Lately, it's been too hard for me, my thoughts don't give me peace and no matter how hard I try not to pay attention, I can't. Things are not going well at work, and at home too. I have problems with money. I so hoped that I would be able to continue my studies, but I can't. I want to cry so much. I just want to disappear. What should I do?