Our ability to focus on different things is one of the strengths of our truly incredible brains. It's a skill we would definitely not want to lose. However, psychologists and neurobiologists have both shown that we pay a price when we multitask.
If I find myself unable to move from the enormity of the forest, it's time to focus on just one tree. If that one tree seems like too much, it's time to focus on one branch or one leaf of that one tree. Narrowing the focus to the minutiae of the situation can make the forest seem more manageable.
It is important for us to realize what too much multitasking can do to our brains. Some interesting brain research from Your Brain at Work by David Rock tells us that to focus more effectively, we must retrain our mind for uninterrupted concentration.
One of the most powerful ways to engage your body and brain is so simple: Focus on one task at a time. Your brain can deeply engage, and your body's senses can fully experience your environment, other people and the situation at hand.