What is the fastest way to make children's temper better (Feng Shui or learning Buddhism)?

Read Tibetan scriptures. That temper is brought by past lives, which is not good for fate. I recited the scriptures and gave them back to my husband. It works. I went back to my brother, too. His temper became better. I think my brother's fate is too difficult, so I read it for him for 25 times, and now his character has changed a lot. Of course, reading by yourself is the most useful. If children can learn Buddhism and chant scriptures, they will be well raised.