I would say:
- you should have been out on your own for at least 1 year not including college if you chose to go, I mean paying rent and bills with a roommate or dolo
- you should have at least been in 1 serious adult relationship where you and the other person can learn to rely on each other outside of just the physical and emotional needs of your adolescent relationships
- you should have been able to save up enough money to either get a decent car, take an amazing trip, pay off a huge bill, or follow a true passion
the rest is really up to you and where you feel your life will take you (school, trade, etc) but I think everyone should be able to survive on their own, save a decent amount of money and spend it on themselves, and also be involved in an adult relationship with all the drama and baggage that comes with it.