Unless your school makes it hard to switch majors, I don't think picking a major right away is super important. Going in undeclared is completely fine too! However, having a shortlist of majors is good and knowing what your interests are. The earlier you declare and stick with a major, the easier you will find picking your courses is. You should pick a major that you are very passionate about, but also one that is practical. By practical, I don't mean the one that will necessarily make you the most money right out of college, but one that you can use in a professional setting and can get a job with. You should speak with your major adviser or career adviser before making your decision as they will have information about career opportunities with each major.