I have changed my handwriting away from cursive during my mid-teens and I was surprised how easy it actually was. I literally just printed out a bunch of pages from [1], practiced for a few days and it was done.

Now I can't really write cursive even if I want to. My signature, which is in cursive, has morphed to an unintelligible mess over time.

[1] - https://www.nala.ie/sites/default/files/publications/better_...