The body is a lie and a deception, you realize. Or rather, your mind realizes, which is the part that matters. You are the mind, not the physical meat that surrounds your consciousness. The climb slowly becomes painless. The pain was an illusion and you've discarded it. You are now spirit. Stair by stair you draw closer to becoming eternal form that experiences only the divine and timeless. You climb, and as you climb you think, and through thinking you are. With each step you draw closer to uniting the self (your real self) and the infinite.