Cannot Break Down a Door with a Sledge Hammer?

How can this be used?  Oh man, can we count the ways.  But let's start with one...

"Oh pick me.  I'll go first."

"But you have not been taught yet in helpful techniques."

"I don't need to be taught, I've done things like this back on the farm." 

How Not to Use a Sledgehammer by Jokeroo

Inside a running dishwasher

How can this be used?  Sanctification - Phil 1:6.  On the outside we don't always see the slow work of God transforming us on the inside in conformity to Christ.