I’ve always had good penmanship. I got Bs in school because my cursive didn’t slant–it was straight up and down–but I don’t think that makes it poor.
Most of the time nowadays, I print.
For a long time, when I would write quickly (taking notes, for example), it was sloppy, but when I slowed down a bit, it was nice-looking.
I noticed recently that it’s always a little sloppy nowadays. And I don’t like it.
So I’ve taken to slowing down just a bit when I write on paper by hand (which is more often than you might expect) and tidying up my penmanship.
It’s an easy way for me to give myself a little efficacy boost.