Those of us who watched the lunar voyage of Apollo 11 were transfixed as we saw the first men walk on the moon and return to earth. Superlatives such as “fantastic” and “incredible” were inadequate to describe those eventful days. But to get there, those astronauts literally had to break out of the tremendous gravity pull of the earth. More energy was spent in the first few minutes of lift-off, in the first few miles of travel, than was used over the next several days to travel half a million miles. Habits, too, have tremendous gravity pull—more than most people realize or would admit.
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