The connotation of forgetting to write when you pick up your pen is to concentrate on writing the posts during practice, as if you don't know how to write. This requirement is that you can quickly change the way you wrote the previous words, and the effect is obvious.
However, it is not easy to actually do this. The reason why many people are not good at practicing calligraphy is that they cannot break away from the scope of their previous writing, and they cannot change their writing habits, so that they lack the ability to write. The perseverance to practice will eventually come to an end.