I hadn't responded to the last question in my first response; how is the good the enemy of the best in our lives; but when i went back and look at it, it was as if a light bulb came on in my head .
The good is the enemy of the best, because as long as we only aim for 'good' we will never reach our 'best'. Good is easy, its comfortable. Best on the other hand, takes a little more effort, a little more time and many of us aren't prepared to invest what it takes to reach our best.
Good is the enemy because it encourages us to settle for mediocrity, which is not what God intended for his children.