I'm feeling incredible sad right now. Since I found running a few years ago, I fell in love with it. I'm having a hard time reconciling that it isn't in my future when I find so much enjoyment from it. Pushing myself through pain & fatigue has been so rewarding, a testament to my endurance...so empowering. Will I get that from walking? I doubt it. I know I have to put things in to perspective, that in the long run it's not important. Any advice from anyone?