The elective coursework component of your degree gives you total freedom to explore Harvard’s course offerings.
In your first three terms, one thing you should think about doing is exploring different concentrations through elective courses, for instance, Freshman Seminars.
As you progress in your studies, you may discover that your elective interests are leaning strongly in a particular direction. If so, you may decide to pursue a Secondary Field or a Language Citation.
On the other hand, you may prefer to simply follow your interests where they lead you. (Interests you are not able to pursue in existing classes, you may be able to pursue through Independent Study.)
There is no preferred way to structure your elective choices. Graduate and professional schools and future employers are not expecting you to pursue secondary fields or language citations. They are expecting you to show evidence that the curricular choices you made in college were ones that deeply engaged you. You are equally encouraged to study seek depth or breadth or even complete randomness in your elective choices. Your best chance of exceling in college is to choose courses – and courses of study – that most excite you.