I have now run 5k 3 times. It takes me roughly 37 minutes. My problem is that between 5 minutes and 30 minutes, I want to give up!! I keep saying to myself "just another 5 minutes" and I KNOW that my body can just about do it now (which is a miracle in itself) but my head keeps telling me that I can't. Does this ever get better? Or will I always be battling against my mind every time I run?