Leading on the days you're running on fumes
Every owner has bad days. The leadership question is what your team experiences when you do.
Shorten the day, not the standard
On the worst days, push only the must-dos and reschedule the rest. Trying to do a normal day while exhausted is how mistakes and short tempers happen.
Name it without dumping it
'Rough day, give me 15 minutes.' Said calmly, that's leadership. Hiding it (and snapping at the team) costs more than admitting it.
Sleep, food, water, in that order
The cliche is the cliche. Owners who push past the basics make decisions they regret and lead worse. Protect the basics.
Take your version of this question further
This is one operator-tested angle on the question. Your shop, your size, your trade, and your team change the answer. Ask your specific version inside Ask a Shop Owner to get a response grounded in how owners like you actually handled it.