"I truly believe that pressure is what you make it," Shiffrin said after coming from behind to win the slalom. "And if you work hard enough and you prepare well enough, no matter how much pressure you feel, you can still perform."
Quote taken from ESPN W. Feb 21, 2015. Mikaela Shiffrin talking about her gold medal in the World Championships in Beaver Creek Colorado.
The simplest approach to high level performance and in this case winning is to prepare better than any of your competitors. Through my research of champion athletes, a differentiating factor between those who win regularly and those who win on occasion or not at all, was their level of preparation.
There is a nuance here because "sweating" and time on task is not enough to qualify as being prepared better than the competition. The champion finishes a training session as tired mentally as physically. The champion finishes every training session having learned and/or perfected a desired skill. Each practice session has a distinct purpose.
It is this daily attention to detail which gives a champion the ability to stand at the top of the race course and be in control. For the well prepared athlete, it is just another race.