We learned that we could point a compass in a given direction, pick a landmark along that bearing, walk to it, pick another landmark, walk to it, and by doing so we could follow a bearing through a forest, through a desert, over mountains, and—at the end of the day—we’d end up in one very particular place. But if, at the beginning of our journey, we decided to change course by just a few degrees, and again we walked that new path through a forest, through a desert, over mountains, then—at the end of the day—we’d end up in a completely different place. Great changes come when we make small
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