There is really no right answer to this question as the areas you should focus on in law are areas in which you have an interest. Your first year of law school exposes you to a variety of different areas of law. I would suggest gaining some experience before going to law school by working in a law firm, even if it is as an entry-level position just to see if you like the experience and surroundings of law. Most of law is not arguing in a courtroom, but keeping clients and opposing counsels informed, drafting legal documents and much more mundane tasks. As more of law is becoming written filings and submissions along with trying to move forward with technology, I would suggest working on writing clearly, concisely and with good grammar as well as be able to work with technology as it advances.