To pass this week's challenge you have to set the example for your son.
Each of our son's have some behavior or habit that we want them to break. Maybe it's leaving socks lying around or watching too much TV or not doing the dishes. I've not had much success changing those behaviors by correction and instruction, but I have seen positive change when I set the example.
When I clean up after myself, my sons do better at it too. When I turn off the TV and read a book, so do they. Pick one behavior that you want to see change in your son and figure out a way you can demonstrate that to him in your own life.