I hDon't forget it's okay to take a break from everything else and focus on your own happiness from time to time;
I have to work 7 days a week or the business will go under and 10 people will lose their jobs.
My last day off was New Years Day.
I don't mean for this to sound glib or ignorant of the pressure you're under, but that's a strong reason for why you need to find some time for yourself; you're going to be a better help to your people if you can get back into a good headspace. Even if you can't find a way to get yourself a day off, maybe something as simple as getting yourself a halfday, or even a long ass lunch to get the fuck away from work shit. Just my own two cents, I know that's far easier said than done sometimes.
I'm really sorry you have all that weight on your shoulders, the dedication you have for others is a real testament to your character.