Sooner or later, a time will come for most when they will feel overwhelmed, stressed and stretched too thin. It will feel like 24 hours in a day are simply not enough to accomplish it all. Well, when that time comes (or if it is already here) please note that you are not alone and that solutions exist.
Focusing on your professional lives only, I would strongly recommend speaking with your boss (director, manager, supervisor…) and have them understand what’s taking place (details are not necessary, it’s the overall sentiment that is of importance). During this conversation you will find that the overwhelming majority of people are understanding and supportive and will do what they can to help you during this process by lightening your workload if possible (which can be done in several ways).
No matter what may be happening, talking to others will frequently be very helpful, even therapeutic and have actual, positive results which will get you that much closer to the place where you belong, a place of happiness.