Think back to many years ago, when the world was simpler and you were asked by adults, "What do you want to be when you grow up?"
My answer was usually either to be a teacher or a nurse, but by the time I got into college, I had decided on becoming a nurse...for about a year and a half. I remember the stress and utter unhappiness that crumbled me as I struggled to get through all those anatomy and math classes. During the first year, I kept telling myself that it's just the hard requirements and that I will like what I'm doing once I get into the nursing program.
Then I noticed the contrast to my English classes. I was much happier when writing essays, reading and analyzing texts. I saw myself doing this kind of thing the rest of my life, not memorizing medical terms and working in a hospital. Truth was, I only chose to nurse because everyone I knew encouraged me to, saying that they "saw me becoming a nurse."
Because I didn't see myself becoming anything yet, I just took their word for it. Two years after I started college, I transferred schools and began my path towards a BA in English. Another year later, I wanted to declare a Double Major in Classics, but since I was almost graduating, I decided only to get a Minor in it (if I wanted a BA in Classics, I would simply go back to school).
What does this tell me? That even when you're in college studying, much less when you're young, you never know what you want to be when you "grow up". Truth is, you're never really grown up in my opinion; you're constantly growing, each and every second of the day. Who knows, maybe in the next few years I'll decide I actually want to study Classics full-time and go for my Masters in that field.
What is the point to all of this? Well, for all you people starting college, scared out of your mind over what to major in, believe me, most people don't even know what they really want to study until about two or three years into college. Some people graduate before realizing, "Oh, I actually really want to study this instead."
The best thing you can do as someone just beginning college is to, rather than worry about what you want to study, explore different things you could study and what jobs they might entitle. Who knows, maybe you have a special talent in Public Health and you never knew.
Don't limit your options to the areas of study that are typical (like Bio, English or Accounting). Try to broaden your interests and see where it takes you through your years of university, rather than constantly wonder what you should be majoring in.
