Given the opportunity to do it all again, I wouldn't change a thing. Enjoy yourself and never linger on negativity for too long because it'll just take away from the time you could spend smiling. It really does go by in a flash. So fill your days with happy thoughts, lasting memories and inappropriately hilarious stories. But most important of all, remember to fill it to the brim with amazing irreplaceable people who will bring an overflow of joy and positivity into your life.
Soak it up bitches, because it'll be over before you know it.