I'm applying to Duke, UNC-Chapel Hill, Princeton, College of William and Mary, and University of Michigan Ann Arbor. William and Mary was my absolute first choice, but now I'm not so sure. And Yale is basically my dream school, but I haven't decided if I'm going to apply there or not. This whole process has made me realize I really don't know what I want to do with my life.... I'm so stressed out :(
Hey, I applied to a lot of those schools; they're all great! I think I felt a lot of what you were feeling when I was applying last year. It really is an incredibly overwhelming process, and there are just so many schools out there! I ended up applying to 16 places, which in hindsight was both good and bad. I don't regret the number so much as my final selection. I highly recommend visiting a lot of the places you want to apply and talk to the students there; it can really help you get a feel for the general atmosphere of the school and you can get a rough understanding of if you'll be a good fit there. I think I kind of ignored some of my more negative feelings about some of the most prestigious schools. Like, within a few minutes of visiting Princeton I knew that it didn't suit my personality, but I ended up applying because it's insanely beautiful and I loved the idea of being able to go there. If you can't visit all of the schools, try to talk to any of the students and do a thorough online tour. Of course, there's only so much you can get out of a website, and they may seem to blend together at some point, but it'll definitely help you at least a little!
One of the things that really could have helped me reduce my stress was just staying on top of things. I got my recommendation and general application done fairly quickly, but the supplements were just so daunting that I was almost too afraid to look through them all early. Don't be! Sometimes just the topic of the supplements can really help you in deciding if it's the school for you. My initial list of places I wanted to apply was at least twice as long as the list of places I actually ended up applying, and a lot of that was just looking at the essay topics. There are a lot of "Why Such and Such University" essay topics, and if you really find yourself struggling to answer that question with that university (or any of their other topics), then don't apply and save yourself some stress and a hefty application fee!
I also can't stress highly enough that if worst comes to worst, remember that rejection, especially in the case of where you're applying, is NOT a reflection of you as a person! I know that sounds so obvious, and I'm sure people had mentioned that to me before I got all my decisions, but it's so, so critical to remember that in these top tier schools, SO much of the final decision is random. There's just such a high number of kids with top 1% SAT scores who are incredibly involved and can write superb essays, that it can be pretty near impossible to make yourself stand out enough so that every college wants you. I have a friend who got into Yale but got waitlisted from Vanderbilt, whereas I got rejected from Yale (...and Brown and Columbia and Dartmouth and Harvard and Penn and Princeton and Stanford) but got into Vanderbilt a month early when one of their admissions counselors personally called me to tell me that she really enjoyed my application. Go figure. (Of course, I couldn't even go there because it was so damn expensive!)
It's late and I'm tired, so I'm sorry if this was convoluted and hope this was at least a little helpful. Feel free to send me a PM if you have any specific questions about the process or the schools you're considering! I can also speak from experience that
F!ERCE is also really knowledgeable about the process and will probably be able to tell you a thing or two about Duke! :D
PS: Based on where you're applying, you should totally apply to USC (Southern Cal, not South Carolina haha) because it's beautiful and feels smaller than it is and has perfect weather year round and they're amazing with merit aid and I'm starting there this fall!
Good luck!