I'm thinking... raising a child, getting married, giving birth to a child, buying a house, getting a promotion, paying off debt, advocating for yourself or your child in the face of offense/injustice, stashing emergency savings...or maybe something else???? For me, my latest 'grown up milestone' is bringing my mom along on a big trip that I coordinated and am paying a chunk of her expenses. I'm used to her taking care of my travel as she used to do that in her line of work so this is a new one for me.

(By the way, I asked LO this question and she said, learning to read makes her feel like a big kid.)