"The reward for doing right is mostly an internal phenomenon: self-respect, dignity (self-worth), integrity, and self-esteem." -Dr. Laura Schlessinger  

What this quote is trying to refer as is that when you do the right thing you should feel all types of good feelings inside and feel good about yourself. She tells us that when doing the right thing has self-respect and dignity etc... because that all comes along when doing the right thing. What she refers to when you do the right thing is that you shouldn't think that you should be rewarded with a prize and just be rewarded with knowing that you did the right thing.