Level. reporter: five months after the accident, colby returned to competition. then he won his first world cup in italy instead of being there to win, i was there to ski and for the love of the sport. that s the difference that i needed in my mindset to win. reporter: that s the biggest change he feels, gratitude when you wake up in the morning now, what does it feel like? it s like i m living my bonus years, because i could have easily died in the car crash. now i ve just got to live every day like it s just a gift. reporter: he s doing just that. colby stevenson is going to be our winner out here today. reporter: kate snow, nbc news, park city, utah up next for us tonight, the cheers heard halfway around thwod. e rl how parents are supporting their olympic athletes ruthann and i like to hike. we eat healthy. we exercise. i noticed i wasn t as sharp as i used to be. my wife introduced me to prevagen