A good friend who is an amateur marathon runner shared an insight about running.
If you’re feeling the pain during a long run, there’s no point thinking about it. Thinking about it only adds more stress into the system. And the higher the stress, the more likely we’ll experience a drop in performance.
Instead, if you manage to relax and focus on other things, it is likely you’ll find reservoirs of speed and energy you didn’t know you had.
As in running, so in life.