i wish i could quit my job [vent post]

So I work at a gas station and its not that bad except for the hellish amount of stress it gives me. I'm very conflict avoidant and customers are not and they always think they know my job better than me among other issues. I need to get my GED so i can get a better job. the stress isn't worth the money, but my mom cut me off when I turned 18 AND dumped her multiple cats into my care so she could run off with her new boyfriend meaning I need to be fully self-sufficient especially monetarily. My dad will buy me groceries or give me rides sometimes but not enough to completely lessen the burden. Dont get me wrong im thankful for all my dad does but he just got laid off from his job so even the little bits of food and free transportation i had is getting cut. I don't know what to even do at this point. All i can do is keep working. On top of all that one of my moms cats is about to cost me hundreds of dollars at the vet and im having my own medical issues that im putting off and hoping fix themself without intervention for now. There's really not much i can do but weather the storm and hope for a rainbow when its over.