In this day and age, focusing on something is not as easy as it used to be. I know for me it isn’t. Yet the ability to focus on any activity is tremendously valuable.
In chess, the ability to focus is a clear advantage: when you practice, when you study, and especially when you play.
So regardless of anything else your child is doing to improve his/her chess — practicing the simple act of focusing will have an amazing impact. Focus, Focus, and Focus!
It’s guaranteed to make their chess much better. (and it’s a good thing to learn anyways)