9. You can handle your liquor.
I’ve fallen in parking lots, down the steps in a club, on the dance floor all thanks to not knowing when enough is enough. In the past few years I’ve learned how to pre-game before hitting the club without ending the night broke, embarrassed or too drunk to care. By thirty you’ll probably have a favorite drink, know the difference between good liquor and cheap liquor and be able to consume alcohol responsibly without ending the night sitting in vomit or some strange man’s lap.