My kid is 8 years old but doesnt behave her age. She is very hyperactive and impatient. It is very difficult to make her do anything from brushing to going to school. There are many kids of her age in our apartment, but she prefers playing with kids either younger or elder to her. It is very difficult to try and teach her manners. She constantly misbehaves with friends and at home. Advising , talking kindly, trashing, nothing works with her. But she is just the exact opposit in school. She is the most quiet and shy girl. Should i be worried. Is this normal in children?