I think I've finally experienced the runner's high.

This is what it felt like: all I wanted to do was to keep running. I didn't want to stop, I didn't want to slow down, I just wanted to run. In addition I wanted an extra challenge - another hill ahead, a steeper incline, a rougher terrain. It was a sweetly masochistic moment.

If these snapshots can be translated at all into life lessons, maybe in the most demanding times, we just need to push a little harder.