In learning calligraphy, what principles and experiences do you regret not knowing earlier?

No watermelon, only sesame? Many people, especially the parents of many children, don't understand that China's calligraphy is the supreme art and the important role of art in personality growth. The purpose of sending children to learn calligraphy is very simple, that is, to write correctly, the earlier the effect, the better, so as not to be often criticized by school teachers. In fact, this group of people completely ignored that calligraphy is a huge cultural system that has developed with Chinese civilization for five thousand years. Every calligrapher in history is a knowledgeable cultural giant. The essence of learning their calligraphy today is to inherit the talents and wisdom of these sages from bit by bit. There are always some people who emphasize that you don't need to learn advanced words, just write better. In practice, they often learn slowly and poorly. The reason is that they forget that "if you take the method, you can only get it", that is, if you study high, you will get it, if you study poorly. To put it another way, if we set the learning goal at 100, we can get 78% of the ten at most. How much can we get if we set the study goal at 30?