A boss once told me I go from hero to zero in a day. On burnout, imposter syndrome, and over-performing.

A boss once told me that I had the tendency to go from hero to zero in a day; sometimes even within a conversation. Her words have stuck with me all these years. I've gone from hero to zero in a day more than the average person uses the restroom. Today was no exception.
What's ironic is that I never remember waking up being a zero. But I always go to bed feeling like one. Every day, I wake up with intentions. Instead, I argue with emails, fold laundry, and cry in the two minutes I can spare alone while checking a bank account that reminds me I'm working three jobs and still not ‘winning.’
It's the small, invisible undoings, like:
The world sees the hero — the spreadsheets, the detailed decks, the over-committed calendar. But no one sees the zero.
I'm not writing this to wrap it in a bow, or to give some philosophical lesson. There's no three-step healing tip at the end. I'm just saying that if you've ever gone from hero to zero in the span of a single day… if you've ever doubted yourself because you feel like too much and not enough at the same time… there's nothing wrong with you.
There's just a system that benefits from you always over-performing. A belief that says your worth is in your productivity. A pattern that calls your burnout a ‘bad attitude.’ A culture that claps when you overfunction… and goes quiet when you crumble.
So what's the lesson here? I don't know. I just know that I get to try again tomorrow. I'll wake up a hero. And I'll go to bed a zero.