figuring out in what order you should divide up your time and energy

“I am struck by how, except when you're young, you really need to prioritize in life, figuring out in what order you should divide up your time and energy. If you don't get that sort of system set by a certain age, you'll lack focus and your life will be out of balance.”
― Haruki Murakami, What I Talk About When I Talk About Running