Like wrathfuldeity, I also read that it takes 10,000 hours of practice to become exceptional at something. That's not 10,000 hours of screwing around and taking it easy - it's 10,000 hours of seriously practicing and pushing yourself. It's staying in shape during the off season. It's perfecting your balance during the summers. It's hitting the gym in the summer to get stronger. It's staying flexible so your body can take the punishment the riding season dishes out.
If you break the 10,000 hours down, figuring you average about 5 hours of riding every time you go up the hill, means you'll need to snowboard 2,000 days before you can even think about turning pro. 2,000 days - figuring you get in 200 days a year (which most people don't or can't) means it'll take minimum of 10 years to become great at snowboarding...And that's if you are always pushing yourself and stay major injury free.
10,000 hours is why, at age 13, Shawn White could stomp the most technical park tricks.
Since you're old enough to post on this forum, and don't write like you're 5 years old, I am going to say no, it's not possible. You are too old. You can become good, but not a pro. Your kids however...Start em off early enough and the sky is the limit.