I can remember my folks pretty well when they were the age I am now. It's hard for me to believe that I'm as old now as they were then. I feel like I'm 19. I also feel like a complete idiot most of the time.
The weird thing is, I don't worry about it so much anymore. I'm pretty comfortable with the idea that I don't know what the hell I'm doing. What blows my mind is that my parents might have been winging it too.