The ability to focus most of your efforts toward one goal usually predicts some level of success. To become extremely good at something it usually means removing many other things from your daily activities.
So it is with tennis. If you want to become a superior player you need to eat, read, sleep, exercise, and practice tennis. It should all be focused on that objective and each item on that list and whatever others you can find must move you toward that goal.
Here is the Warren Buffet 20 slot rule for investments that you can find a way to repurpose as you invest your time and energy into tennis.
