Read AcadAdmCoach's comments above, especially this: "Learning 'how' to study and taking challenging academic courses (as recommended by USAFA and the other SA's) are key steps. I tell my students today that drive, determination and self-discipline are important. In many ways, like muscles, they get stronger with practice and use."
I was "all that and a bag of chips" from high school, except my SAT scores were lousy. It took me going to NWPS to fix that problem. I got to USAFA on try #2.
And at the end of my doolie year, I sat at the very end of a long, polished to a bright shine, table, with an O-6 at the other end, and various O-5s and O-4s on both sides. Their purpose that day was to find out if there was any reason for that O-6 to NOT sign my disenrollment paperwork for academic failure. Calculus III.
I had the drive, the determination, and the self-discipline, what I did NOT have were study habits and time management skills.
Long story short, he didn't sign the form. My excessive (142 hours in one semester) amount of EI (extra instruction, one-on-one with my instructor) made him think I'd given my all, and "THEY" hadn't taught me. So it was off to summer school where "THEY" were successful in teaching me.
Learning HOW to study, and HOW to manage your time...those are the two that I really wish someone had told me about and then helped me to learn/master. It wasn't the academics, it's the skillset. It's not just the academics you have, but the skillset you bring to the academics that will decide your success.
Come fully armed!!!