Making myself write in my desk journal every day, even if I just log what I eat for meals, is helping improve my handwriting. I've settled on this True Writer Kyoto fountain pen as my work horse writing instrument (for now, anyway.) My entries still look a bit sloppy to me, but they're evolving slowly. I keep trying to write at the speed I used to, which is when I lose control of the pen. The medium nib seems to help me write better versus a fine. Not sure why.