Spend the next year of your life desperately trying to achieve that blissful, successful innocence when you could attach "teen-made" to everything you make. You can no longer use the excuse "I'm just a kid" when the world is out to get you. Mourn the ability to flex that you can do all this stuff and you don't even have your diploma yet. Holy fuck, you're almost 20.
Watch the very thing you spent your entire high school peak working on get disgraced overnight in an online cat fight and let it destroy you. Consider giving up. Cry a lot.
Cut your hair- fuck it, SHAVE YOUR HEAD. Attempt to rebuild yourself with the little pieces of yourself left. Rip the posters off your wall. Tape them back up. Erase your social media. Crack from FOMO and rejoin, accepting the fact that this digital nightmare realm is now as necessary to you as food, water, and shelter. Graduate with honors, flunk your first year of university. Fall hopelessly in love with anyone that shows you any kind of attention. Religiously listen to Fiona Apple. Keep trying to rebuild what you lost with no luck.
Drop out. Give up. Transfer. Defer. Quit. Rejoin. Pass. FLOP. Fail. Crank it. Cry. Quit again. Rejoin. Give up. FLOP. Accept it. Write a symphony, make a movie. You are a living, breathing stock market and you'll probably peak again- just not right now.