You are always tired.
You realize you may not have the same values as your parents and it no longer makes you uncomfortable.
You come to accept that not everything in life has closure, nor does it come packaged in neat boxes and you can move on.
You acknowledge when you are wrong, and apologize for it - to the person's face, so they can actually hear you. Without having to be asked.
You acknowledge you still have a lot to learn - about everything, everyday, all the time. It is exhausting (maybe this is why you are always so tired).
You realize your to-do list will never end. (Also why you are always tired). In fact, after you are dead, others will still have to work your list - 1.Pick your grave site/crematorium 2.Write obituary 3.Order flowers. 4.Psychoanalyze your children to undo the damage you have done. Etc., etc.
You remember you have responsibilities outside of what makes you happy and this will never change.
You experience true joy when you fulfill those responsibilities to make someone else happy (except for laundry - this never has to make anyone happy, ever). So weird, I know.
You forgive yourself for the times you haven't acted to way you wish you had and mindfully try to be better, always. Like that one time, at band camp...
You realize the best moments in life are the ones you least expect and they are fleeting (and usually involve other people and lots of laughter, and that's really about it). And you have stopped trying to recreate them because you understand the whole "fleeting" thing.
You accept others for who they are (still working on it...)
You look in the mirror and don't wish for anything else because you have finally made it.