Always take the high road. You may be stepped on, crushed and even heart broken but at least you can look yourself in the mirror everyday and say I did the right thing, and I'm not going hate myself for it.
Your are your 'selfish' years. It's a decade to immerse yourself in every single thing possible. Be selfish with your time and all the aspects of you. Tinker with shit, travel, explore, love a lot, love a little and never touch the ground.