BEIJING—Laying in bed ahead of her third race of the Beijing Olympics, Mikaela Shiffrin could not stop dreaming about what awaited, envisioning a sequence that unfolded like her initial two over-in-a-blink events. “Just repetitive. The whole night long. And I kept kind of waking up from it and then going back to sleep. And it just kept happening: I skied out on the fifth gate. Surprise!” she said with a laugh. “It really felt pretty awful.” Who among us can’t relate to the concept of work-related anxiety? We still must get back on the clock—and that’s precisely what the American did Friday, competing in the super-G at the Winter Games and placing ninth behind winner Lara Gut-Behrami of Switzerland in a field of 44 ski racers. Still, Shiffrin was pleased to say she made it to the end this time. “It’s a really big relief to be here now in …