"We are not so much concerned if you are slow as when you come to a halt." -- Chinese proverb

Good long walk yesterday, some blistering, another walk this morning shorter by two miles. If it's not one part of my body arguing with me, it's another. What was a small blister that I'd padded up yesterday and today is now one with both a top and bottom side and a lot of fluid. So much for my notion to do another walk this evening.

How we think does affect what we can do. But sometimes our body rules.