That was my original question, wasn't it? "Do you know what you're saying you want to do?" If I ask you what Special Forces does and you say "I dunno, they go shoot bad guys and stuff" then I'd say that you're definitely a victim of the mythos. If you said "they conduct missions across the full spectrum of SOF capabilities, with emphasis on direct action, unconventional warfare, and foreign internal defense," then I'd say you've done your homework and have some idea of what you've decided your life is meant to be. Neither of those answers would require any firsthand experience, but one is certainly more informed than the other.
My point isn't anything personal against you. You're just the latest in a long line of kids who come to SAF and proclaim that they've always wanted to be the next beret-wearing / trident-sporting / knuckle-dragging (Marines) maniac. Most have almost no concept of what the term SOF even means. When you say you want to be SOF, that means nothing. Do you want to be a Special Forces officer? Do you want hand out bags of seed and teach women how to use cloth diapers? Do you want to drop leaflets out of airplanes? Do you want to make propaganda broadcasts in foreign languages? Or do you want to teach Iraqis how to fly helicopters? Every one of those jobs is a "SOF" job, but only one of them is in line with what you seem to want to be.
In a larger sense, you're putting the cart before the horse. It's not a terrible thing, nor are you the first to do it. It's great to have goals and I applaud you. Make sure you know what the goal actually is, for one. Secondly, worry about doing your best for your first two years at USMA. If you get a chance to go to SFAS as a cadet, great. But doing so isn't an advantage. I know two guys from my class who went as cadets. Neither is in SF now. Neither is even in the Army now. Things change.
Be patient.
One of the dumber remarks I've heard on here in awhile. Most of us had intensely personal reasons for joining the communities we did, and wanting to do it "because it's cool" doesn't get one in the door.
All of his quote was relevant, but I think what scout pilot is getting at is that being SF is being more than yourself and it's not just about yourself; like their motto "De Oppresso Liber" (To Free the Oppressed). Also in the SF creed it says, "I am a volunteer, knowing well the hazards of my profession." I think he just wants to guy to understand what he is saying.