Hey Dave!
For me..I spent my 20's and most of my 30's feeling like I looked terrible.
I never wore make-up, dressed like a grandmother, and would walk down the street with my eyes cast down , not looking at any man that past by.
As for mirrors.., from the chest up only, and that was simply to brush my hair and teeth. Period.
NOW..
different story completely.
I'm 37, feel like 24.
I live in a college town, and often get mistaken for a student. I get asked for ID to buy booze, and my oldest son, refuses to be seen with me, as he
doesn't want to scare away any potential girlfriends!
I simply changed my attitude from the inside, and it became reflective on the outside. I still hide my smile, but I'm working on that.
As for looking good naked...
DAMN STRAIGHT I DO!