To improve temperament, you need to do the following:
Start with the correction of personal posture. Many people's posture is not good enough, which leads to the whole person's temperament showing no spirit and atrophy, so it is very important to practice their posture to the best state. What you need to do is to find tutorial videos of posture practice on major websites, start with the most basic and simple movements, and adhere to the guidance of the coach in the tutorial. For example, many tutorials on shoulder and neck correction, getting rid of obscene postures, and dynamic tutorials on practicing walking and standing postures can make you very different, much more than when you don't practice.
Second, we should not only correct our posture, but also learn to maintain a good posture as much as possible during the day. For example, always remember to hold your chest high, raise your head, abdomen and hips, and don't hunch over. Practice these movements into normal habits and your posture will get better.
Third, clothes make the man. Good posture may not particularly highlight your personal temperament. A person's dress style often reveals your connotation and temperament, so learning to dress will greatly enhance your temperament. A good match will show your personal charm well, and your temperament will naturally improve. If you find it difficult to wear, you can choose some professional clothes, or skirts with the same style as dresses. These clothes don't need to be matched, they are all suits, which is very worry-free.
Fourth, my mind is full of poems and books, and I am tired of cooking leaves with old Confucianism. Putting this point at the last point is not to say that it is not important, but because it needs to be persisted, lasting for a long time and accumulating for many years. So, if you don't have the habit of reading, you can cultivate it from now on. Books will enrich your mind, and knowledge will be digested by your brain and become a part of yourself. They will enrich your spirit, and your spirit will reveal extraordinary temperament.
As long as you do these things step by step, I believe you will improve your temperament.