A great way to know if you would like a certain career is to follow (shadow) someone around on their job. Believe it or not, many students do this and many professionals are willing to be shadowed. Much like for mentor interviews, contact someone you know or work with those you know to find someone you will get to know in order to arrange shadowing. More information about job shadowing can be found here.
Faculty members are a good place to start in terms of finding people to shadow because they tend to be knowledgeable about their discipline and belong to professional associations. You can see faculty bios and get contact information from college and department webpages here.