I think that most people have, at some point in their lives, endured things for a long-term goal, regardless of what that goal is. There's a significant difference between working and doing a job, the latter being the thing most of us are trying to avoid.

I think it's important to work for yourself, even if you hate your current job, for there are always things you can learn. It's easier said than done, of course, especially if hate your job, but it's possible.

Ultimately, I think you should stick to your beliefs and act intuitively. If your intuition is screaming and yelling "Quit", then quit and try to find other ways of earning extra cash. Upvoting helps, which is why I'll continue to upvote your posts :)