Hello :)

I'm currently reading Breakthrough and learning so much from it. But this one question keeps coming back to me. I run, trails, roads, short and long distances, races. I truly enjoy running in itself and to experience what my body is capable of, but is wanting to improve the same as wanting to control the situation? Does wanting to run more miles in a shorter amount of time always cause you to tighten and does this always come from ego? Where can and should you draw a line as an athlete?

Thank you so much!