The 31-year-old did not get to compete in the 2010 Games in Vancouver — despite qualifying — because he broke his collarbone in training.
"Getting injured at your first Olympics, it's not the way you envision it as a kid, or even the week before. This year, I definitely won't go out of the start, guns ablazing first time," says Duncan.
Duncan has been skiing since he was three years old.
Click the video above to see why Duncan is on CBC's "Ten To Watch" at this year's Games.