You can never go wrong with having a focused and disciplined mindset, especially with all the distractions that the modern world has to offer. Teaching your children from as early as possible to be focused will set them on the path to real and sustainable success in all facets of their lives.
It is one thing to have goals, but it is even more important that your goals are focused on what is important and that your daily agenda is aligned with these goals -if not you will struggle to achieve.
One of the hallmarks of very effective and successful people is their ability to be disciplined and focus. Without focus, you will spend your time doing the wrong things, always running out of time, and struggling to complete even the simplest tasks.