I have terrible handwriting and have had the idea in the past to try and relearn with a new style. Like maybe the way they teach French children in school! But when I looked online for a book on how to learn handwriting as an adult they were all for veterans who had lost their dominant hand and that was incredibly depressing. Anyone have a good resource?

Just copy writing you think is good, and keep a daily journal where you write exclusively in that style. It'll be slow going at first, but it works. Takes about a year before it's totally natural.

My handwriting is much cleaner with a fountain pen than a ballpoint pen. Tools matter. It doesn't have to be an expensive fountain pen or paper, a cheap Faber Castell on printer paper works fine.

Of course your voice is going to sound much better on a condenser mic than on a $1 mic from RadioShack, but that doesn’t mean your voice changed. We’re talking about improving handwriting, if you write someone a note illegibly your excuse should not be that you forgot your good pen at home.