Instead of, “Jason, your legs hurt…” I shift the focus away from the pain and fatigue to sentiments that benefit me, like, “Woo! My legs are burning. It feels like they are growing. Good. Getting stronger.” Sometimes I think of it as coaching someone. Those of you who have coached or motivated someone: you would never say something like, “Your legs hurt. You probably can’t breathe. You shouldn’t even be here.” You would say, “Nice work! Keep moving! You’re getting so strong! Your movement looks great!” And so on.