obedience

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

James E. Faust

when he said this, james was comparing a goal that cant be accomplished to an irritation, because when you cant accomplish something you get frustrated and therefore, it becomes an irritation. also,  mr.faust compares an accomplished goal to a building block because a building block is complete and ready for building. further more what mr. faust was trying to say was that when your goal is to obey its very easy to accomplish that goal because all you really have to do is obey, therefore, it should be very easy to obey.