Stay focused, but carefully:
Also, the condition known as Directed Attention Fatigue is real. You have to actively manage it for greater overall health. Step back at regular times through the day and try to regain a broader perspective.
Read up on the condition known as Directed Attention Fatigue. Great advice exists on how to manage it. Especially if you are frequently in fast-paced situations or often engage in high stimulus travel (commonly called a long commute).
Multitasking is often the illusion of progress. It does work for simpler things, but the gains from multitasking tends to be minimal. Typically, this shows in increased risk of poorer end results, more mistakes, and potential cognitive impairment.