It’s funny how our goals are only as elastic as our sense of self, of who we are and what we think we can accomplish. If all you’ve ever done is run three miles at a clip, then a ten-mile run can feel as far as the moon. Your mind will compile reasons why that distance is beyond you, and you may believe them. If ten becomes the new normal, then a half or full marathon may be the next step. After a marathon comes ultra. Each time you level up, your mind will step in like an overbearing chaperone and try to shut down the party. That very dynamic was playing out in my own mind on the long drive.