Replying to How to convince parents I want to make skiing my winter sport

I've played hockey ever since I was 3 and next year will be my senior year of high school. I've skied my whole life but the past couple years I've gotten into it a lot more and I want to make a full commitment to skiing next winter. The problem is that my parents want me to play hockey and they don't believe that I want to hit hockey. How can I convince them I want to quit hockey and make skiing my winter sport? I think part of the problem is that they don't see skiing as a full time sport but more of a past time...idk. What are your thoughts?!