Why does such a simple thing as keeping busy help to drive out anxiety?

It is difficult to worry while you are busy doing something that requires planning and thinking. Resolve to keep busy and you will have no time to worry. The great Scientist, Pasteur, spoke of "the peace that is found in libraries and laboratories." Why is peace found there? Because the men in libraries and laboratories are usually too absorbed in their tasks to worry about themselves. Research men rarely have nervous breakdowns. They don't have time for such luxuries. One of the most fundamental laws ever revealed by psychology states that: it is impossible for any human mind, no matter how brilliant, to think of more than one thing at any given time. When you have two things to think about, you can focus on either thought in turn, but never on both simultaneously. We cannot be pepped up and enthusiastic about doing something exciting and feel dragged down by worry at the same time. One thought or emotion will surely drive out the other. During the second World ...