It definitely works. As long as you are willing to practice calligraphy carefully, you will definitely be able to write well.
My mother-in-law is over 60 years old and went to a senior college to study Chinese painting. She had no foundation in painting before. When I first started learning, I didn’t take it seriously. I thought it was just for fun, and a bunch of old men and women had nothing to do to entertain themselves. However, I have been studying for more than three years now, and my paintings of peonies and plum blossoms are really of a certain standard, at least at an amateur level. Her paintings hanging in my living room, my friends think they are paintings by masters.
So, we young people really need to work hard and persevere.