''When obedience becomes our goal, it is no longer an irritation; instead of                                           stumbling block, it becomes a building block.''                                                                                                                                                                  ~James E. Faust

He is comparing a hard to get goal to an irritation. Usually, an irritation is some sort of discomfort. He compares an accopmplished goal to a building block. Building blocks are actually finished and complete. Once you accomplished obedience, there is no problem at all. This sort of irritation, as he says, fades away. Some people struggle just being obedient for at least once. It  takes time to achieve obedience, but you'll get there if you try. James is reffering the struggle as an irritation, and as you achieve your goal, all this irritation (struggle to be obedient) will go away. A stumbling block is a very negative adjective meaning difficulty to achieve. However once obedience touches you, you'll choose to be more respectful. Building blocks, are being referred to as relief. Relief and happiness comes once you overcome the struggle of being obedient. It is almost always important to be obedient or else the irritation kicks in, not literally. Still, it is very important to be obedient because we won't have a single struggle. Positive side affects may occur being obedient. Life is way more harder disobeying. It takes only few seconds to listen and obey. People act like it kills them. However, it is always better to stick with obedience because it won't feel like an irritation(struggle). It would feel like a building block(relief), if you choose the path to obedience. Therefore, choose obedience. 

   James E Faust
1920-2007

''Obedience...is the primary object of all sound education."

                               ~Elizabeth Missing Sewell

I think what Mary is trying to say is that obedience will take you far in education. You have to be obedient to learn or else you won't learn a thing. Being obedient will help you a lot in educational purposes because you choose to obey to listen and you choose to follow along. Being obedient can also help you collaborate with others in a class. Without obedience, we wouldn't have doctors, or firefighters. The policies, doctors, lawyers, we see today once were in our shoes. They all chose to obey and they became something great in life. Of course when they went to school some people didn't obey. They disobeyed and life became a failure.  The reason why is because they chose to disobey and they chose not to learn. Some of them even regret not learning. In my opinion, is that I will obey my teachers. I want to become something great in life, and it all starts here in school. 

Elizabeth M. Sewell
1815-1906

Obedience

''Obedience is central to becoming, being, and remaining happy."

DAVID BEDNAR

This quote means that obedience is the main key to happiness. Happiness is always earned. Happiness is not the easy to gain. Through obedience, happiness is earned. When you choose to obey, happiness come your way. It can happen within hours, days, weeks or even months. Great rewards come for being obedient, and hapiness comes along with it. Without obedience we will never reach the happy level. Many people who choose to disobey always ends up miserable. At first disobeying might feel good, but it will never end well. A chain of consequences come along, for not obeying. You will never, ever, ever, feel happy at the end. Sometimes steeling might seem right because you might have some friends doing it, but it will soon lead to huge consequence involving polices. Something so risky like that could be avoidable if you just obey. An example of gaining happiness is obeying your teacher. Doing your homework can lead to happiness and free time. You won't have to worry about nothing really. However those that don't do their homework end up looking for a failure. That's why obedience is the key to happiness according to David Bednar.