> I’m not the parent, but I had a moment where I physically felt something “break” in my brain (stress related), and ever since then I haven’t been the same person.

Same here. I had the mix of a heavy burnout and a broke up a couple of years ago and I'm still recovering.

It's curious how I totally had the same kind of "logarithmic" recovery that some other people wrote in other comments here. It might be how the brain reacts to that.