As developed from my experiences in life.
One can not be at the peak of success all the time. Every human being follows the ups and downs in life. So while negotiating part B of the curve, everyone checks one's speed and attitude towards efforts one has taken to reach the peak. Everyone tries to make adjustments so that the downfall slows down.
I propose that do not leave your original pace of life that has helped you to achieve the peak. But proceed with same qualities and values in life and accept part B as an integral part of life. With this you may reach the trough of failure faster but with the same momentum, you can climb the next peak (part C) faster.
Never forget your virtues.