I'm only 21 so some would say that I don't know what I want to do, but trust me...I do. I don't know when it happened that I decided I wanted to be a court reporter, sometime early in high school, but then the more and more I thought about it, it was a PERFECT fit. Everything I love, words, independent work, grammar, a challenge, all into one package! And more importantly everything I don't love, depending on others, working with many people, etc, etc NOT involved. It just worked out really well for me, and I've been doing it for a year and really love it.
I know it's not that easy for most because most of my friends have already changed their majors at least a few times. You'll figure it out when the time is right. Do what you want for right now, and if you change your mind later, there's nothing wrong with that either. Good luck