Okay so I don't really want to open a journal about this. But at this point im fed up. Work has been getting on my nerves recently and has been for a long while. We've been understaffed since new years and we lost someone in the process that also does my job. I have three other people I work with. Due to this I can't work my usual mornings and come home to relax. I have a really bad shoulder that pops whenever I move it and it feels like someone is squeezing it tight. If it's worked consistently the pain worsens. The more I relax and take breathers it calms down. Since we're understaffed I have to work nights. And my boss puts me on closing on busy days. This worsens the shoulder and pain comes down my forearm. This isn't any normal pain and I've had it for 5 years. I've seen doctors and they didn't give me straight answers. I also have two workers on the verge of quitting if he doesn't get the help at closing and another if calls out he is fired. And I have the third that won't really do shit with the dishes and would sit his lazy ass somewhere else for a good period of time. All he would do is bring in the groceries. That's it.
The point is I'm also an artist and I would like to pursue my dream job of becoming a game artist but with this going on its not helping me get that extra time. I don't know what to do.
My job has people from Jamaica that are leaving July since that's the majority of our workers and once they are gone I'm kinda stuck even working my ass off even harder. I've complained to my bosses about this several times. Human Resources isn't putting the effort to send them apps and my brother applied to the same job as I am. And yes they accept family members here. Though one of his applications he filled went to laundry and they aren't understaffed since I know my brother gets off early since they have nothing else to do. They haven't got the app to my work place. They haven't gotten apps since they hired two more workers but they quit in the matter of couple of days

So what should I Do? Fill in for another job or just quit and try to do commission work? I know asking others isn't the right thing but I'm really at a unhealthy state of losing my shit.