I hope you don't feel like I'm hijackin your topic, I just wanted to post a rant of my own when I saw your post.
I'm in a similar situation. I am bored out of my mind at work and it's only getting worse. When I started the job 7 years ago I said it wasn't something I'd do for more than a few years.... yet I'm still here. I quit once but I eventually went back. (The place had become unbearable due to some negative co-workers, they left before I went back.) Now it's automation making my job more and more boring. I studied translation, this job started out as a translator job but by now I spend most of my time just copy and pasting. And the workload is very uneven - some weeks we'll be busy, other weeks there's just not enough to do. I also spend a lot of time at work staring at my screen.

My problem is kind of the same as yours, I'm not sure what it is I really want. And I'm sensitive to stress, and would get stressed pretty easily in a new job situation. I've also considered going freelance, but I don't really have any friends in this city so the only social interactions I have are with my coworkers. Without that, I'd get isolated and depressed.
But I am honestly at a point where the boredom is killing all my motivation and I am constantly miserable. Even on weekends. Right at this moment I'm trying to motivate myself to make dinner - I don't even feel like eating. Usually when I'm depressed I eat too much. And it's definitely caused by my job. Last week I was on holiday, I could completely detach from work and I was feeling much better. But I went back to work the day after coming home and immediately felt like crap again.