Spending a few minutes exploring some basic concepts about choosing a major can be helpful, and this article does a good job in laying the groundwork. Big Future also has amazing resources to search through majors and careers that can be found at the right of the article. It is true that some students and parents worry that if a student decides late on a major or changes a major, it can impact their ability to graduate in 4 years. This article explains research regarding these concerns.
I believe the message for high school students is to think about areas of interest and possibly have a focus or major in mind when you get to college, while being open to the idea that this might change. Here is a worksheet to help you think through areas of study that could be a good fit for you. But if you don’t determine a major before college, or if you change your mind while in college, you should feel confident that it is all part of your journey.