I sometimes abuse ampersands

Ever since I got accepted to one of the Ivies, I've been wracking myself with anxiety: what if I fuck up the dorm application? or the immunization forms? or the visa? or something else entirely that I don't even know about? And what if I don't, and then I'll have enormous opportunities to fuck up the taxes, or my thesis, or whatever. And what if I don't, and I come back after some 5 years, all Odysseus-like, and nobody remembers me but the family dog? I do realize that it's a once-in-a-lifetime opportunity, and I'm properly excited, of course, but a host of exciting neuroses is getting the better of me :-/