Self Punishment Perhaps?

Yesterday after the race (and the requisite post-race nap--and an eye doctor appointment, unrelated, of course), I did a walk/jog of 7+ miles. I said I wasn't going to play catch-up when I missed my daily exercise. I still plan to keep that promise to myself, but I was upset at not being able to jog the whole stretch at the 5K. Am I punishing myself, I wonder? On a mental and emotional level, I don't want to think I have to do everything perfect. Brooke was writing about that subject on her blog. I can totally relate. Either way, I wound up doing a little over 10 miles of jogging and walking for the day. My legs are killing me now. I guess it wasn't a totally bad thing since walking/jogging is healthy. But I want this lifestyle change to be good for me physically, mentally, emotionally, spiritually, etc. I don't want to feel like I'm 'bad' or believe that I need to be punished when I attempt something and don't succeed to the point I think I should. I'm doomed for failure otherwise because I know I'm no Olympian or anything--and my goals will probably just increase if I keep up with the jogging.