I attended a university for two years and every semester I had a different major. From applied music (trumpet) to chemical engineering. I had no idea what I wanted to do so I dropped out and worked at McDonalds for four years. At first I thought, "Oh I have wasted two years and lots of money" because I had no degree. But when I finally decided to pursue nursing I found that my two years of chasing different majors had fulfilled all my core classes for a BA.

You aren't wasting your time by switching majors; you are trying on different "clothes" until you find some that fit you.