Enjoy current music not just what was released before the year 2005.
Still wear tees, shorts (cargo or board, not golf), and skate shoes
Comfortable wearing gender non-conforming clothes because women's linen capris, oversized knitted sweaters, etc are cozy and comfortable as fuck.
Enjoy and appreciate weird ass Gen-Z humor
Can carry a conversation with a 16 year old in their native dialect
When I was younger, I was terrified that one day I would wake up and be my father or some other stuffy old man that complains about "kids these days". I'm super glad that I never turned into that guy and remain my 22 year old self in my mind. That said, I picked up guitar again after a fifteen year break and "kids these days" don't know how good they have it. The quality of budget guitars is insane and the amount of free courses and music learning and creation tools is just brain melting.
The life of every Gen-X kid I grew up with was eerily similar.
Monday-Friday:
Wake up
Make your own breakfast because parents have to go to work. If eldest child, make breakfast for younger siblings. A friend and her siblings divided breakfast where each sibling was responsible for one thing. Sue eggs and bacon, Ed milk and juice, Jimmy buttered toast, Sally plates and utensils. I always thought that was cool.
Catch bus to and from school
Alone and unsupervised until dinnertime (aka, when the street lights come on)
Have dinner with parent(s)
Go to room to do homework and/or listen to music and/or spend toouch time on the phone.
Sleep and repeat
Saturday & Sunday:
Breakfast with parents...maybe Sunday dinner. Other than that, stay out of the house so parents can enjoy their weekend.