A lot of times, I use "work" as a place to hide. I know a lot of people who don't have PTSD do that too. Even my T admits to being something of a workaholic.
"Balance", I think, is something to be sought after,. I don't know what all the demands of your job are. I'm sure it DOES eat up a lot of your time, and that you're not just using that as a place to hide. (I also think, sometimes, "hiding" isn't such a bad idea.) YOU are important, though. You deserve the time it takes for you to relax and regroup in a healthy way. You can get caught up in a cycle of work and pushing yourself, and sort of punishing yourself, without calling it that (and setting it up so you can call it something else and get away with it.....)
I'm not always all that good at working this stuff out. Part of the reason for the therapy. I'm also alone, so I don't have anyone to feel like my job is more important than they are or any of that. You have WAY more stuff to try to juggle than I do. I wouldn't know what to tell you, even if I wanted to tell you what to do (which I don't). I just think that, sometimes, we have to give ourselves a break, before we actually DO break. Think about that "blue/not blue" thing. I still haven't quite gotten past being amazed that there actually ARE more than 2 options most of the time.