There are two kinds of people in this world. Non-honest and honest people. Its a very simple thing of not lying. Its always better to not lie in most situations but lying is such an easy thing to pull off that most people don't even know if or when they are. The right choice will always be telling the truth though.
Doing the right thing when it does not matter might be one of the hardest things to do because there isn't really a outcome just more of a moral thing. But for it to be the right thing to do it depends on the situation.