I have been going through an incredibly stressful time myself, lately. IEverything that I have worked towards the past few years looks like it might be pulled out from under me, but I really do not know for sure yet, so I am running around like a headless chicken trying to fix something that may be ultimately unfixable at the time being, just in case it isn't. All of it is piling on after a few months of stress about other issues and two months without a break.
The past two weeks, though, despite the 5-6 hours per day allocated to running around trying to create a miracle (on top of work and housework), I've been okay. And that's because I finally identified what about the situation was causing me the most grievance and remedied that. Nothing has really changed, situation wise, and in fact we've just had bad news upon bad news, but it doesn't touch me like it did, because what pained me the most isn't an issue any more.
For me, it was the fear of having to put my life on hold and be stuck in limbo again, so the husband and I sat down and laid out a "Plan B" that I felt all right with. For you, it may be something else completely, but I think that identifying what it is that causes the most anxiety is the key. Then, if you're overwhelmed by lack of control you can break everything down into tasks; if your mind is wandering too much, you can throw yourself into work; if you need a little break, you can take half a day off to focus on yourself... because you know what you need and why.