Desire

"It is God, who in his good will toward you, begets in you any measure of desire"
-Phillipians 2:12-30

To those that have a strong work ethic, it is easy to blame others for certain failures due to laziness, as if work ethic is something a person has complete control over. I have heard of studies that suggest that what we consider work ethic is somewhat genetic. This quote would suggest that too. It may help us be more sympathetic towards those that don't seem to be able to work as hard as us. On the other hand, the gospel also teaches us to seek and we will find, so even those without persistence can make the decision to seek persistence from God in faith and it will be granted. Even some that don't believe in God, believe in the power of positive thinking: believing that you can do it and doing it. God is very generous in that way.