You can visit depression but you don't need to furnish the place. If you feel like you need some help don't be afraid to ask. Just the asking in and of itself may offer some relief. There are some good doctors out there, but they can't help until you make some effort to take control and decide to get better. That skiing on a sunny day with friends and weeks of pow hasn't helped seems like a sign to me. Just because you are not contemplating suicide doesn't mean you are altogether well. It can't hurt to talk to someone who knows more than the kids on NS.
I would say maybe try to find out/ sort out what is at the root of your depression. Is there oneor two main things that are getting you down??? If you can change some of the things that are getting you down maybe you can get on track to being more upbeat. I like to accomplish things to get myself back on the happy side of life, set a goal for yourself in something you do, or set up and complete a project you've been thinking about for a while. A little hard work and a job well done can make you feel more like your life has purpose and fulfillment sometimes.
So what is getting you so down???? Parents?? Impending responsibility?? Friends??