Saving anything is good, so $600 sounds nice.
I'd say start by ditching the "wage slave" verbiage, in all seriousness. Yes, work sucks. Slaves could not save $600/month, and repeating over and over to yourself how it is horrible evil slavery will just make you more miserable. You see people go deeper and deeper into that rhetoric, then onto the incel forums and they start adopting that toxic outlook: it just destroys their spirit.
Work sucks, but it doesn't have to be excruciating torture. Think about what you're working for; why you're saving. Think about the positives of your job. Factory jobs are probably really tough, but you're getting away from screens for a bit and likely getting some exercise, so in that way it's better than me sitting in a chair looking at a screen all day until my brain is fried. All that bullshit people say about mindfulness is frustrating because it's kinda true.
I'd also say focus on the skills you're leveling up. Every job I've had, including cleaning/janitor type work and running a food stand, I've gotten better in a way that I could apply to other parts of my life. Communication, efficiency. Maybe getting more efficient so that you can afford to take small breaks more often because the task took you less long than others. Maybe muscle definition. Whatever it is, seeing progress is really helpful.
It's also not permanent, right? These days, you can hop out and try something else pretty much whenever. This is only a portion of your life as a whole. So keep that in mind. It is what it is.
Having money is awesome. And it's very different when it's your money rather than mommy and daddy's. My fiance always says that when she feels sad at work she pulls up her bank account to look at how it has gone up. Works for her.
If I may ask, what are you hoping to save for? For me, it is worth it to work so I can have a home and be away from my insane parents.