I have a hard time saying, typing, THINKING "6 years old". Every time I write it, I write "4 years old" then backspace to correct it.
This kid is now far from 4 years old.
Charlie struggled a bit adjusting to the rules and structure, and academic rigor, of kindergarten this fall but has since settled in (mostly). He is a polite, affectionate, curious boy and everything I could hope for in a son. I'm certain I'll be writing the same thing at 26 (as I backspace the "2" out of there in denial.)