I set off on my run in the mid afternoon sun. As I close the front door of my house, I listen to two voices inside me: one comes from my mind, the other one from my body. Together they either help me achieve my goal or make me give up half way through. My marathon is in almost four weeks’ time and I aim to complete seventeen miles today. I plan to “break the wall”, that invisible, mental construct that defeats runners of all ages, genders and abilities. Last…