"A keystone habit leads to other positive habits and disciplines. These positive traits start a chain reaction that produces other positive outcomes. The presence of these important habits help you become more faithful in other areas of your life. On the other hand, the absence of these key disciplines can impact you negatively."

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The thing about the summit region of Mount Washington, it can have areas that are flat and rolling. In those conditions, it's very difficult not to become disoriented, because it's not like you're on a face where you know what's up and what's down. You're on a flat surface. Every direction is the same in a white-out condition. And with wind speeds constantly changing direction, within a minute you have no idea where you are.

— Hugh Herr