Dude, don't stop. You're 23 years old; you're practically still a baby...you have your whole life ahead of you. You don't know for sure that you're going to lose your job, and with your qualifications as manager of what I assess as being a retail job or supermarket, you will find another job, don't worry. The early twenties are fucking hard, that's why everyone has so much fun because our lives pretty much suck. There's no decent job, you're inundated with tons of work and college if you go, and you just scrape by until you have enough experience to move forward. You're just paying your dues, and I know that sounds like a shitty thing to say, but it's true. One day you will look back on all of this and laugh, trust me.
What is the rush, anyway? I know moving out into your own apartment and such is nice, but you're in college; save your money and stay with your parents until you either graduate or leave school. You're making yourself miserable trying to do too much with too little. If you just HAVE to have an apartment, why don't you move in with your gf and pay half her rent (provided that she wants to move in with you)? It's good that you're a go-getter, but sometimes you gotta know your limits.