The things children find fascinating, adults will find annoying.
The things your manager finds important, you might find it irrelevant.
It is a matter of point of view. But there is an underlying issue with that and it is called power struggle.
When you are an adult, you know where are the boundaries and you know if you do or don't something. There are consequences.
But for children, this is not yet being established.
Children are not naughty, they are just not wired for the consequences and to survive the real world, because their brains are not developed yet.
This means that we need to introduce the level of consequences by the age level of the child. Don't punish them too hard for things they are not able to understand.
It takes time to create a human, but also it takes time to grow your own team member to be excellent.
The difference is you can choose who to hire, but you can't choose your children.
This might mean you must try to adopt to their point of view and grow them to reach out to the desired one.