The posts have moved on but I will add this, when people say they feel they are still a certain age, what they mean is that is the age they feel they came into their own. In other words became an adult. They are certainly not locked in their past.
I always had the feeling in my head that I was 17, I felt I became an adult at that age. I had a fiancé who had been drafted into the army and he faced going to war, he had no choice in the matter. Life was not simple and easy for me, I married at 18 and moved a long way from my home to be with my husband. We were young but had to grow up quite quickly. I am certainly happy in my own skin and would not want to be 17 again. I quite like being retired and doing as I please.