My boss fired me because i quit!!?

Can someone tell me what to do I'm an excellent worker and i just want my job back it makes me happy to make subs for my regulars and i miss the heck outta Carlos and Carmen and Ana, and strangely my boss that fired me...I'm an idiot i don't know why i take so much crap for the things that make me happy...no one is hiring i have a family and i quit because he only paid me $7.50. now i have no car and me and my boyfriend are fighting all the time because he thinks I'm a loser. My son drowned my Kittie i cant afford a car i need my job back so bad :-(