We all have a finite amount of time to live, and within that mortal countdown we devote some fraction towards our work. Even for the most career-focused, your life will be filled by many things beyond work: supporting your family, children, exercise, being a mentor and a mentee, hobbies, and so the list goes on. This is the sign of a rich life, but one side-effect is that time to do your work will become increasingly scarce as you get deeper into your career.