Movement And Balance

Was listening to an interview with the author of Einstein - His Life and Universe on NPR yesterday. While talking of his personal life, he quoted a line from a letter Einstein wrote to his son "Life is like riding a bicycle. To keep your balance you must keep moving"

I wondered what he may have meant about the need for balance and movement and in what context. Is balance and therefore movement so important in life that it would ill behoove upon anyone to stop and risk tumbling ? I would need to read the entire text to understand but the quote stuck in my head because it speaks so much to my life's condition.

The last several years have been about ceaseless movement coupled with a very contrary sense of stagnation. I must have been spinning circles in one position without any movement forward. The sense of balance has been lacking as well. I dare not stop moving simply because it would take more than I have to overcome the inertia of rest that would result in. Movement is therefore from a sense compulsion. I wondered if balance would be restored if I moved directionally as well.