Don't think of what you left behind. And don't think too far ahead. For how can one leave something to which one is tied? And how can one feel accomplishment in something never attained? One should set a destination that is within one's reach. As one reaches that point another slightly higher goal can be set - and so on, as one travels up the path. In this way the mountain can be climbed in increments. Look not at the vast mountain as a whole. Rather look minutely and scrutinize each individual step. There will thus be no discouragement, for every step is a success.
Zen Foot-Notes: Upon the Unknown Passage is the journal of an expedition's ascent of the highest mountain in the world - not Everest, as everyone assumes, but Pochen Point - the fabled summit of the nether world. The expedition to climb the highest mountain in the nether world is a symbol for mankind's journey through life. The summit is different for each member of the expedition. And yet, because it also symbolizes death, it is essentially the same. The expedition members discover that what matters is not the goal, but merely the path. And some realize that it is not even the path that matters, but rather the passage - the pathless path.
Wayne Omura lives and writes in Denver, Colorado. He is the author of Movies and the Meaning of Life: The Most Profound Films in Cinematic History.