@Landain, that’s so cool! & please, 40 is like the new 20. You can’t be too old.
I feel the same with my 14 year old — maturity-wise. Most people think I am his older sister, his friends included. I suppose his entrance into adulthood shouldn’t cause me so much anxiety. (It’s four years away! I told myself I wouldn’t blink, but here we are!)
40. . . I wish. . . I'm old enough to have a 40 year old child.
I was the stay at home parent for 12 years. I viewed parenting like this...
Infant - 100% attention - all in
Toddler - a small amount of freedom, prepared to jump in
Elementary age - more freedom, they spend 6 hours away from the house.
Teens - slow transition from childhood to adulthood. Treat them like adults. Punish when they break a rule lessen the restrictions every year until they hit an age where you feel comfortable with their independence. For my daughter, I was comfortable with her around late 16, early 17. My son is 18 now. He just earned that level of respect this year. His 17 year old sister earned that level at 16. Her personality is like that of a 40 year old Taylor Swift fan.