According to anecdotal evidence (read: a quick Google search), the average college student changes his or her major three times before graduating. The fact that I never once changed mine -- did that make me an above average college student? -- or below?
I had a roommate who seemed to change his major three times a semester. I didn't get what was so hard about choosing a course of study and sticking to it. Looking back, perhaps he was a bit wiser than me. If you can't afford to change your mind a million times during college when else will you be able to?
Yet, I know I'm only limiting myself if I think my career has to be confined to what I studied in college.
(I can't believe it's been almost three years since I graduated.)