Keeping the "big picture" in mind is very important to me.
It is easy to get distracted by breaks in exercise, times when the pattern of activity gets interrupted by life in general. It is then when the temptation to take the easy road (the couch) is the strongest.
For me - I have really only one goal - my big picture: age well, age comfortably, age with enough energy and flexibility to do what I want for a long time.
I wish our culture wasn't so shallow in their judgements of its older citizens.
Well, I can't change that. But I can march to my own drum.
All the really "young at heart" people I know are active. They are moving. And they are interesting people who have active minds and bodies. They are interested in living, thinking, creating.
I believe aging gracefully includes respect for the limitations of the aging body (that isn't supposed to live forever), and making the most of what body and mind are left to you at any given time of life. It is accepting the limitations that nature has hard wired into you at birth while using the rest as best you can.
For me - walking is the key to the "big picture."