If you want to change your major, do it now, not later. I changed my major extremely late in the game (second semester "junior" year -- chronologically it was that semester, but I had taken a semester off, so credits-wise it was first semester junior year). Doing that was a challenge. I had to go through various hoops to get some classes to count towards my major that weren't part of the curriculum and had to reorganize my schedule...don't do it as late as I did!

That being said, I'm very happy that I changed my major. I would have been absolutely miserable if I hadn't. And, better late than never! I started out as a nursing major, sure as anything that I wanted to be a nurse, but throughout my entire freshman year I had doubts, and then, after my first semester sophomore year, when I did clinicals for the first time, as much as I liked nursing and was good at it, I didn't love it, and when it came to being completely honest with myself, I realized that my heart just wasn't in it. I'm now a psychology major, which was actually my second choice when it came to a new major, but it has proven to be a good choice.

I will say this though, absolutely do not choose a major just because it will lead to a career. Especially since unless you major in something like nursing, there is no guarantee. My biggest piece of advice is to major in something you enjoy! There's no sense in making yourself miserable!