This is actually a very deep topic, because how you act is basically the sum from years of instruction given by other people on how you should act. You hope how you have been trained is the correct way as you compare it to the rest of society and then your own 'heart' dictates if you follow or not.
Both JB and LDS have some good points going. To be honest there is no correct way to act. People see the correct way to act differently than others. One person might see as to act kind, gentle, and truthful to be right. Some also see working all the time is right. There are flaws in all ways to act to one person or another.