Do you remember what it's like to ride a bike? If you sit on the seat and don't push the pedal, the bike tips over sideways. For it to stay up and go forward, you have to keep pedaling all the time!
The Bible says learning good things from dad, mom, and Jesus is our "pedal." If we think, "Oh, I already know how to be good, I don't need to listen to mom anymore," we stop pedaling. And what happens? We fall and start making a mess again! We have to listen to instruction every day to keep going fast and safe.