There was a BBC detective TV series shown on our local public broadcasting station called: "Wallender" (which I very-much enjoyed by the way.) And in one of the segments, one of the characters (who was an older man) said something to the effect: "When you get to be as old as I am you come to realize you can only be the person you've always been." Perhaps that is a bit of a negative attitude. However, in my case, it has turned out to be true.