I'm sorry that you're going through a hard patch, I hope things improve for you soon.

It's very PollyAnna, but I always try to do something for someone else when I'm down, even if it's just sorting out things that can go to a charity shop. It is important to do something for you too. It may be that you need to back off on some activity, or it might help to scale it back to something that you want to do rather than something you feel you have to do. Sometimes the last thing you need is still more obligations.