If I was going to pretend to be the girl sitting in the back of the room with their arms crossed, I think that quote after quote of person after person saying how good it felt to make righteous choices would cause me to roll my eyes and cut through it all with one well placed, "Why?"
Why does making righteous choices make me feel better about myself? The answer the lesson gives is basically "you'll feel proud that you made a right choice, you won't feel guilty, you won't lose feelings of self-worth, and you will feel confidence in the presence of God."
Those are all more or less valid, but the one that the lesson goes back to the most is feeling proud for making the right choice, and that concerns me a little bit. Mosiah 2:21 reminds us that we really can't get to where we want by works alone, and I've seen this kind of thinking turn into some really snotty, "I'm more righteous, therefore better, than you," kind of behavior.