In How to Focus: 20-20-20 Vision, I explained how focus works and why it is essential in many areas of our life. I compared mental focus to clear vision. If we see well, we function well. If we are able to stay focused mentally, we also function well. Easy!
As I said before, when we focus on one thing, the rest is blurry. It is important to remember that we cannot focus on everything with the same level of intensity.
It is as if we juggle too many balls at the same time. Even highly trained jugglers can handle no more than six or seven balls at a time and they train for years to reach that point. If we want to juggle the things we need to do in life, we need to train for years, and the sooner we start, the better.