Say “no” to everything. People who are mature are also very hard to get ahold of. Being a grown up is a full-time job and you don’t have the time to just hang out with your friends on a Sunday afternoon and have the time of your life. You’re busy being busy.
After spending most of our lives being able to dress however we pleased, we’re now entering a time when we actually have to start considering whether or not an outfit is age-appropriate. When you’re in your mid-twenties though, this can be a surprisingly difficult thing to do.