There is some good advice above. Also, as a sophomore, there are still a lot of core classes that need to be taken and if you can fit in one or two of ones you are interested in to help narrow down your decision, this can help. It can also help to do some informational interviewing of those in each of the fields to learn more about what they actually do and is required of each field, which can help narrow down your decision with what matches your interests, strengths, and attributes. If your campus has a career center, a visit with them can help as well and with the various departments to help learn more. Best of wishes with your decision as you move forward. The nice thing is is that nothing is set in stone so that if you find you are not liking something, you can always change to what does interest you more. Good luck!