Here's what makes runs work for me in Atlanta: I speed with the momentum down the hills and when the path takes me up the side of a mountain, I know that it's OK to walk if I need to. The uphills are getting easier with practice.
So, in life, when relationships, work, school and physical fitness are going well, take the momentum and do as much as you can. When you're challenged by obstacles, know that it is OK to take shorter steps and go slower.
Every life has its peaks and valleys. A financial coach told me recently that we will all be hit by crisis every 15 years. We can prepare for the hard times mentally and spiritually, so that when we are tested by the high hills, our ability to tackle them comes easier.