Thank you!
I decided on psych after borrowing a psychology book from my older brother when I was younger, and looking through it. It was so interesting, learning how the mind works. After that I went and bought a book about psychology for myself. Now I have around 15 books on the subject.

I decided that was what I wanted to go to college for.
I'm currently a senior in high school and am taking AP Psychology, which is basically an introductory psych college course. I love it. I still have to sign up for college classes.
Adult psych sounds interesting. I suggest taking a few different types of psych classes, along with any classes that will supplement it, like statistics. I was going to take that this year, but I didn't have enough room in my schedule for it. Wherever you plan on going should be able to provide you with the additional info you need.