When you are overwhelmed, it is OK to let go of one thing. And then two. And then three.
Of course, we all want to get everything done, and there are so many things that are important for us, for our dears, for our community, for our company. But you are not achieving more if you want to keep pushing when you are at your limit. You are just giving yourself, and everybody else, the illusion that things are progressing. So, cancel that meeting, skip the gym for the week, go for a take away instead of home cooking, spend half an hour longer in bed in the morning.
Until you are once again balanced.