It is all about recognizing the progress one is making.
As of today, I have reached a new milestone: the longest distance walked at one time. Using my sister's treadmill, I was able to walk 2.6 miles today, taking 1 hour to reach this distance.
And this is in my old cruddy shoes, not the new walking shoes Jim and I will be purchasing upon my return from Columbus. I can't imagine how much nicer the walks will be, and how much further I might be able to go in them, since I won't be dealing with tired feet as much.