Normality is a paved road: it's comfortable to walk, but no flowers grow on it. - Vincent van Gogh, Dutch Post-Impressionist painter who is among the most famous and influential figures in the history of Western art.
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.