"When obedience becomes our goal, it is no longer an irritation; instead of a stumbling block, it becomes a building block."

                                                                  James E. Faust 

This quote means that you get use to obedience it becomes an addiction and you start being more and more obedient. Like when my goal was to learn how to play football and instead of me giving up i put in work and know it became a passion and I love that sport. So when your goal is to become obedient don't give up just try your best.