When I was in my twenties I figured that by the time I was in my forties I’d feel, mentally, like I was in my forties. I don’t. In many ways, I feel like my twenty-something brain has been transplanted into the body of one of my crusty old uncles.
Also, when I was in my twenties, I would have thought that feeling like I was in my twenties when I was in my forties would be a good thing, but you don’t keep the parts of the twenty-something mindset that feel good: the arrogance, the invincibility, the knowledge that you are the future. You lose those on your 30th birthday. You hold on to the insecurity, the confusion, and the fear that you will make a mistake that will haunt you for the rest of your life, only “the rest of your life,” is a much shorter period of time, and much, much closer.