It's about staying in the moment, isn't it? It's also about remembering the reality of impermanence.
"When the wind is right and the cloud is gone, you can see down this road as far as Darjeeling," I told her. "But it is a long and difficult road, full of perils, and if a traveler on foot were to look at the length of it, his spirit would be overcome and he would sit down and refuse to go any further. You must not look to the end of the road, Portia. Look only to the step in front of you. That you can do. Just one step. And you will not make the journey alone."