Obedience
"When obedience becomes our goal, it is no longer an irritation; instead of a stumbling block, it becomes a building block."
Reflection: I believe that James is trying to say that once you accomplish a goal that you have been trying to accomplish is not irritation but success. You will be proud of yourself. But if you stumble you will fall and not make success. If you build blocks you will be building up your life and accomplishing your goals. Life is not easy but if you try hard success would come to you.