Great motto and choice to live by SeaBreeze! And that really and truly includes our MINDS...
I know some people who chose to keep saying: Well, you know, I'm 40 now, and can't do like when I was 20!

GOOD GRIEF, CHARLIE BROWN!! I was a mere babe at 40!!
It's not that I try to hide my age from people...I am 77 ... but I can't tolerate it when they say "Oh my...well...you sure don't look it...you do pretty well, don't you" ... like I was 177 instead!
Sometimes I have to straighten myself out and stop concentrating on what can be a rather aggravating nuisance of thoughts that bother you when you concentrate on aging...I think we all go through that to a certain extent... but its always a CHOICE of how we look at things.
I know of people who LOOK for signs of slowing down, arthritis, problems that the AMA assigns as 'natural' to aging ...and the Law Of Attraction never fails us... what we concentrate and focus upon is what we GET. And sometimes I have to look in the mirror and give myself that little lecture!

So, not trying to be critical of people who are having a rough time...