"In traveling over the vast prairies and mountains it is well that the range of our vision has certain limits. If we could take within scope of our sight the whole extent of the distance to be traveled, we should most probably give up our original intention as one of the impossibilities; a wise Providence has ordained otherwise. The distance is bounded frequently by high ranges or mountains, which cut off the perspective, or the atmosphere between the eye and the object obscures like a curtain the far spread waste, inspiring the wearied traveler with fresh and renewed energy."
Solomon Nunes Carvalho, 1857
Don't look to far ahead, focus on where you are now.