I'd be curious if anyone had good advice on how to improve your handwriting ability well into adulthood (I'm 35). My penmanship was so bad in grade school that I attended special education classes to improve it, but it still was and remains horrible. This is a source of insecurity for me and since I've always been glued to a keyboard it has been easy to handwave away as "screw this, the world is all typing-based anyh…
In that vein: Have you tried learning calligraphy? If you use the more traditional nib shapes (even if using a fountain pen), you'll likely form letters in a different manner than with a ball point pen. You can move from more traditional stuff to things that look like print or cursive that you like. And then it is just practice.