Death is not more certainly a separation of our souls from our bodies than the Christian life is a separation of our souls from worldly tempers, vain indulgences, and unnecessary cares.
Practice being in the moment when you are running, whether you are on your own or in the race.
At which point should we let go and do what we want to do, and when should we submit to rules? Coming to terms with our true natures and who we really are has always been a fascination to humans. I know it fascinates me.