Walking Vs. Running

Staring back in high school, I've always tried to do some form of exercise.  I've tried various types of exercise, from running, walking, videos, and/or classes at a gym.  I seem to do what the spirit moves me to do at any given time.  There are days when I want to exercise, but more often, I do it because I know I will feel better when I am done and because I want to be healthy.  Lately, I've chosen running as my method of exercise.  But there were days when I really didn't want to run.  On those days, I would tell myself, "Well, at least you can get out here and do it.  Some people aren't able."  And I would just keep going.  Now that I'm having to take a break from running, I see the value in it even more.  I am thankful that my lack of running should only be a short time.  The walking is okay, but I'm surprised how much I miss running.  When I first heard that I would have to walk, I thought, "Oh good, an excuse to slow down and go slow."  But now, after a couple weeks of walking, I'm looking forward to getting the green light to run again.  Once again, I am thankful that I can walk or run.  And when I take up running again, I doubt I will take it for granted.