They can help you with career assessment instruments and help you focus in the right direction. Beyond that, here is my personal advice for someone in college who is not clear in what direction they want to go. Most majors teach us the vocabulary of an industry, how to research information in that field and how to approach problem solving in that field. In college make sure you learn how to research information, manage and solve problems, and write and edit correctly. Make sure you come out of college at least knowing how to compose proper sentences and good paragraphs.
Communication is the essence of almost all professions.
Finally, take courses offered by the professors and teachers with the best reputations. I don't care what they are teaching. Hello I have been given the advice that what I need to do in terms of clarifying my own career planning is to talk to people in the field holding positions that I aspire to, and ask them how they got to where they are professionally. I have been trying several methods to meet people and talk to them about career issues but the advice seems easier said than done. I am a member of a listserv in Yahoo groups for professionals in my field and I have submitted questions to them and had moderate success and gotten feedback.