Maybe you've known exactly what you wanted to study since sophomore year of high school. Maybe you know exactly what you want to be in two years. Maybe you did not freak out at all—not even a little bit!—over this whole "declaring your major" thing.
If so, this blog post does not pertain to you. You may go back to picking out your interview outfit for the job you know you're going to apply to 26 months from now.
But maybe you don't really know what you want to study. Or what you want to be. Or maybe you do, but it's not what you once thought, and you don't know what that says about you.