Today's Gospel reading from Luke 10 is the familiar story about Martha and Mary. Martha was busy doing the serving, while her sister Mary just sat at the feet of the Lord and listen to him speak. When Mary complained, Jesus pointed out that "there is need of only one thing and Mary has chosen the better part."
It's clear that Jesus wants us to put my spiritual life, prayer life, ahead of all other chores we need to do in life. If this lesson is a theorem, then one corollary would be to put the spiritual health of our heart ahead of our physical health and concerns about all other conditions of life.