I would share with you to start a journal if you have not done so already. Keep track of the things that excite you, the things that you are passionate about. Deciding on a career is very difficult, and the more you experience through learning and internships your career choices may change which is not a bad thing.
In parallel to starting a journal, if you have the opportunity you should volunteer within the fields you are interested in to give you a sense of what it is like. Volunteering also gives you access to talk with some of the professionals within specific fields. Another idea would be to reach out to your guidance counselor to see if they have contacts of professionals in different fields who you could reach out to or contacts of former students at your school within your field of interest who are in college so you can hear about their experiences.
The ingredients to the right colleges, equates what is right for you on many different factors to lead you to a successful career. If you still feel you can't pin down deciding on a career, maybe researching colleges that have multiple disciplines of studies. There are a lot of students at the time of college selection who still not sure about the career of their choice.