You know that's what so many people don't seem to realize, that the person you are at 18 is in most cases not the same person you will be when you are say 23. It's amazing how much you can change in those years.
this is true.....you completely change, you're a whole different person.
and as much as you do change in that time period - it levels off more the older you get. But 18-23 whoa these are very transforming times.