I'm a freshman in college at Washington University in St. Louis, going for a degree in architecture right now.
I want to do it because my brain is made to think spatially, and 3D design comes very naturally to me. Architecture is a really tough degree with tons of hours in studio every semester, but I can't really imagine myself doing anything else. Plus a masters in architecture allows you to do a lot of different things, I'm interested in industrial/product design too.
If you plan to go into architecture, just build and design lots of things, whatever you want. Get your brain wired to your own design process and that's the key.