"When you have worn out your shoes, the strength of the sole leather has passed into the fibre of your body."
~ RW Emerson ~
Doing challenging work can be uncomfortable while we're doing it, but afterwards, there is a real sense of accomplishment- that we didn't quit. It's like climbing a steep mountain. The upward steps are brutal, but getting to the top is it's own reward.
I keep climbing the hills before me.