Second, practicing calligraphy is like practicing people. There are research courses in calligraphy psychology abroad. Practicing good handwriting is of great help to enhance self-confidence and a good way to hone one's mind. Practicing calligraphy can make you not impetuous and firm-willed, which will make you change your fortune subtly and have greater benefits.
Third, in the era of office automation, white-collar workers no longer pay attention to writing, and such talents are rare. If the handwriting is beautiful, it will become a specialty and superior. What's more, your job now is propaganda and you need a good hand. Of course, drawing is also helpful to your work. At the same time, it is also the expression of a person's inner quality, which is often regarded as a side of a person's quality, and is also very widely used in practical application, and may even become the starting point for higher authorities to select talents.
Fourth, it's hard to say how long it will take to refine the text. If the method is right, it will be quick, and if the method is wrong, it will take a detour. I suggest you practice at your post. Now there are many Copybook for calligraphy who write very well and teach you how to refine words. Hard-pen calligraphy bookstore has a plenty of video lectures that suggest searching for fields online.