When we were kids, our imagination was a big part of what we considered reality. We largely lived in our imagination. It gave us hope that one day we would be more than we were. It made us believe that the world is full of miraculous things.
The older we get, the more there is behind us. Regrets pile on top of regrets and good old days pile on top of good old days. As we get older, the past becomes more dominant and the future less exciting.
But the part of you that you once were as a kid is still in there. It’s just that there are other layers on top.