from Mihaly Csikszentmihalyi:
"...the best moments usually occur when a person's body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile."
from John Gardener:
"We are designed for the climb, not for taking our ease."
from Tal Ben-Shahar:
"Attaining lasting happiness requires that we enjoy the journey on our way to a destination we deem valuable. Happiness is not about making it to the peak of the mountain nor is it about climbing aimlessly around the mountain; happiness is the experience of climbing toward the peak."