Averyc, my biggest piece of advice is to find a group or club, or any other extracurricular that you feel comfortable being yourself in. I struggled immensely with not losing myself in all the doolie year pressures, but I joined the choir and that helped me greatly. I developed strong friendships that make the bad times more bearable. However busy you are, always take a moment to collect yourself and appreciate the little things you have. Hope this helps!
I've always wanted to join a choir group but was never able to join a professional one other than my small church choir. How good do you have to be to join choir at USAFA? I have a basis of music from playing the piano and enjoy singing during my free time.
My roommate does choir and she says that the director is awesome, and that if you have a desire to sing and be in the choir, then they will take you. So there is no pressure there. It's apparently a very positive, fun environment that has many opportunities like trips and singing for various important people (my roommate sang for the Japanese consulate, the Superintendent, Graduation stuff...)