This is a sister thread to the “How young are you?” thread, in which I posted this paragraph:
I have felt the same inside ever since I was 18 - by that I mean mentally I still feel as if I am 18. I don’t mean I necessarily behave as if I am 18. As time passed I always felt the same inside, but assumed it was just me. Then when I was in my mid fifties chronologically I was chatting with my mum who would have been 80-ish, when she said she felt about 21 inside, and had done since she was 21. Discussing it then with my wife she felt similarly - leading me to conclude that everyone has an age that when they reach it is “their” age mentally, no matter what their physical age may be. Speaking to others since I have found that for most people it is in the range 18-25.
Or maybe the people I’ve discussed with and I are the oddities, and you feel the same inside as your date of birth reminds you are outside.
So, how old do you feel inside? If that has changed over your adult life, it would be interesting to learn that as well.